STATUS REPORT ON PRIMARY FREQUENCY STANDARDS.HELLWIG H.1974; NATION. BUR. STAND., TECH. NOTE; U.S.A.; DA. 1974; NO 646; PP. 1-12; BIBL. 3 P.Article

MICROWAVE TIME AND FREQUENCY STANDARDSHELLWIG H.1979; RADIO SCI.; USA; DA. 1979; VOL. 14; NO 4; PP. 561-572; BIBL. 2 P.Article

FREQUENCY STANDARDS AND CLOCKS: A TUTORIAL INTRODUCTION.HELLWIG H.1977; NATION. BUR. STAND., TECH. NOTE; USA; DA. 1977; NO 616; 69 P.; BIBL. 2 P.Serial Issue

FREQUENCY STANDARDS AND CLOKS: A TUTORIAL INTRODUCTIONHELLWIG H.1972; NATION. BUR. STAND., TECH. NOTE; U.S.A.; DA. 1972; NO 616; PP. (70 P.); BIBL. 1 P. 1/2Serial Issue

Time and frequency applicationsHELLWIG, H.IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 1993, Vol 40, Num 5, pp 538-543, issn 0885-3010Article

ZUM PHOTOREZEPTORENPROBLEM DER SCHWACHLICHTBEWEGUNG DES MOUGEOTIA-CHLOROPLASTEN IM BLAU BZW. HELLROT BEI NIEDEREN TEMPERATUREN = LE PROBLEME DES PHOTORECEPTEURS DANS LES MOUVEMENTS EN FAIBLE LUMIERE DES CHLOROPLASTES DE M. DANS LA LUMIERE BLEUE OU ROUGE A BASSES TEMPERATURESSCHOENBOHM E; HELLWIG H.1980; BER. DTSCH. BOT. GESELLSCH.; DEU; DA. 1980; VOL. 92; NO 2-3; PP. 749-762; ABS. ENG; BIBL. 21 REF.Article

TIME, FREQUENCY AND PHYSICAL MEASUREMENTHELLWIG H; EVENSON KM; WINELAND DJ et al.1978; PHYS. TODAY; USA; DA. 1978; VOL. 31; NO 12; PP. 23-30; BIBL. 20 REF.Article

AN ACCURACY ALGORITHM FOR AN ATOMIC TIME SCALE.ALLAN DW; HELLWIG H; GLAZE DJ et al.1975; METROLOGIA; ALLEM.; DA. 1975; VOL. 11; NO 3; PP. 133-138; BIBL. 23 REF.Article

CIM - Lösungswege zur Integration = CIM - approaches towards an integration. Target oriented approach is a safer way to successHELLWIG, H.-E.VDI-Z. 1992, Vol 134, Num 1, pp 39-43, issn 0042-1766Article

TWO-FREQUENCY EXCITATION FOR THE RAMSEY SEPARATED OSCILLATORY FIELD METHOD.JARVIS S JR; WINELAND DJ; HELLWIG H et al.1977; J. APPL. PHYS.; U.S.A.; DA. 1977; VOL. 48; NO 12; PP. 5336-5337; BIBL. 7 REF.Article

Einflüsse der Ablauforganisation auf die Wirtschaftlichkeit = Influence de l'organisation des activités d'une usine sur la rentabilité = Influence of industrial plant activities organization on profitabilityHELLWIG, H.-E.VDI-Berichte. 1989, Num 752, pp 319-327, issn 0083-5560, 9 p.Conference Paper

ANATOMY OF THE PANCREATIC DUCT. A DUODENOSCOPIC-RADIOLOGICAL STUDY = ANATOMIE DE LA VOIE PANCREATIQUE. ETUDE DUODENOSCOPIQUE ET RADIOLOGIQUECLASSEN M; HELLWIG H; ROESCH W et al.1973; ENDOSCOPY; GERM.; DA. 1973; VOL. 5; NO 1; PP. 14-17; ABS. ALLEM.; BIBL. 12REF.Serial Issue

Multiple reflections and Fabry-Perot interference corrections in Maker fringe experimentsHELLWIG, H; BOHATY, L.Optics communications. 1999, Vol 161, Num 1-3, pp 51-56, issn 0030-4018Article

Der Weg zur Realisierung von CIMHELLWIG, H. E; HELLWIG, U.VDI-Z. 1988, Vol 130, Num 10, pp 15-19, issn 0042-1766, 5 p.Article

Die Integration von CAD und CAM. V: Effizientere Konstruktion durch Verbesserungen in der CAD-NC-Prozesskette = CAM and CAD integration. Efficient design by CAD/NC pocess-chain improvementHELLWIG, H.-E; THEOBALD, M.VDI-Z. 1994, Vol 136, Num 3, pp 46-54, issn 0042-1766Article

ACCURACY EVALUATION AND STABILITY OF THE NBS PRIMARY FREQUENCY STANDARDS.GLAZE DJ; HELLWIG H; ALLAN DW et al.1974; I.E.E.E. TRANS. INSTRUMENT. MEASUR.; U.S.A.; DA. 1974; VOL. 23; NO 4; PP. 489-501; BIBL. 17 REF.Article

CAD/PPS-Verbindungen. Teil 2 : Stammdaten in CAD-Systemen = CAD/MRP connections. Part 2: Master data in CAD systemsHELLWIG, H.-E; KUNKENN, J; LAUFER, H.-J et al.VDI-Z. 1992, Vol 134, Num 9, pp 96-99, issn 0042-1766Article

Global engineering : Steuerung von verteilter Arbeit = Global engineering : control of distributed engineeringTELLKAMP, T; HELLWIG, H. E; THEOBALD, M et al.VDI-Z. 1998, Vol 140, Num 9, pp 24-28, issn 0042-1766, 4 p.Article

Exceptional large nonlinear optical coefficients in the monoclinic bismuth borate BiB₃O₆ (BIBO)HELLWIG, H; LIEBERTZ, J; BOHATY, L et al.Solid state communications. 1998, Vol 109, Num 4, pp 249-251, issn 0038-1098Article

Die Kopplung und die Integration von CAD und CAM. III: CAD/NC-Kopplung = Couplage et intégration de la conception et de la fabrication assistées par ordinateur. III. Couplage conception assistée par ordinateur ― commande numérique = Coupling and integration of CAD and CAM. III. CAD-NC couplingHELLWIG, H.-E; HELLWIG, U; PAULUS, M et al.VDI-Z. 1985, Vol 127, Num 1-2, pp 28-32, issn 0042-1766Article

CAD-Systeme im Maschinenbaum = Conception assistée par ordinateur en construction mécanique = Computer-aided design in mechanical engineeringHELLWIG, H.-E; HELLWIG, U; PAULUS, M et al.VDI-Z. 1984, Vol 126, Num 8, pp 283-292, issn 0042-1766Article

Das «neue» Engineering im Anlagenbau = The new engineering in plant constructionTELLKAMP, T; HELLWIG, H.-E; THEOBALD, M et al.VDI-Z. 1995, Vol 137, Num 5, pp 43-47, issn 0042-1766Article

Die Integration von CAD und CAM. IV: Die Integration von NC-Funktionen in CAD-Systeme = Intégration de la conception et de la fabrication assistées. IV. Intégration des fonctions de commande numérique dans un système de conception assistée = The integration of CAD and CAM. IV. The integration of NC functions in CAD systemsHELLWIG, H. E; HELLWIG, U; JOHANN, U et al.VDI-Z. 1988, Vol 130, Num 5, pp 22-25, issn 0042-1766Article

Effects of supplemental magnesium in diets of laying hens on egg production and egg quality parameters = Effets de la complémentation en magnésium dans les rations alimentaires des poules pondeuses sur la production et les paramètres de qualité des oeufsSTILBORN, H. L; HELLWIG, H. M; WALDROUP, P. W et al.Nutrition reports international. 1989, Vol 40, Num 1, pp 123-128, issn 0029-6635Article

Crystal growth, crystal structure and linear optical properties of the non-centrosymmetric ammonium bis(nitrilotriacetato)zirconate and hafnate, (NH₄)₂[Zr{N(CH₂COO)₃}₂] and (NH₄)₂[Hf{N(CH₂COO)₃}₂]HELD, P; LISTL, B; TILLMANNS, E et al.Zeitschrift für Kristallographie. 2000, Vol 215, Num 1, pp 65-71, issn 0044-2968Article