THE POTENTIAL OF SHEAR WAVE OBSERVATIONS = LA POTENTIALITE DES OBSERVATIONS DES ONDES DE CISAILLEMENTHELBIG K.1981; EUROPEAN ASSOCIATION OF EXPLORATION GEOPHYSICISTS. MEETING. 43/1981/VENICE; NLD; DA. 1981; PP. 4Conference Paper

A THEOREM REVISITED-WAVE FRONT CURVATURE IN MEDIA WITH LAYER-INDUCED ANISOTROPY = UN THEOREME REVISE: COURBURE DU FRONT D'ONDE DANS DES MILIEUX A ANISOTROPIE DUE A LA STRATIFICATIONHELBIG K.1980; FESTSCHRIFT THEODOR KREY; DEU; HANNOVER: PRAKLA-SEISMOS; DA. 1980; PP. 57-71; BIBL. 7 REF.; ILL.Book Chapter

HOW DOES A SCIENTIFIC SOCIETY REACT TO CHANGES IN THE CONDITIONS OF PUBLISHING.HELBIG K.1978; THE FUTURE OF PUBLISHING BY SCIENTIFIC AND TECHNICAL SOCIETIES/PROCEEDINGS OF THE SEMINAR HELD IN LUXEMBOURG; LUX; LUXEMBOURG: OFFICE FOR OFFICIAL PUBLICATIONS OF THE EUROPEAN COMMUNITIES; DA. 1978; EUR/6109; PP. 67-73Conference Paper

DISCUSSION ON "THE REFLECTION, REFRACTION, AND DIFFRACTION OF WAVES IN MEDIA WITH AN ELLIPTICAL VELOCITY DEPENDENCE", BY FRANKLIN K. LEVIN (GEOPHYSICS, APRIL 1978, P. 528-537)HELBIG K.1979; GEOPHYSICS; USA; DA. 1979; VOL. 44; NO 5; PP. 987-990; BIBL. 7 REF.Article

SYSTEMATIC CLASSIFICATION OF LAYER-INDUCED TRANSVERSE ISOTROPY = CLASSIFICATION SYSTEMATIQUE DE L'ISOTROPIE TRANSVERSALE INDUITE PAR UNE COUCHEHELBIG K.1981; GEOPHYS. PROSPECT.; ISSN 0016-8025; NLD; DA. 1981; VOL. 29; NO 4; PP. 550-577; BIBL. 20 REF.; ILL.Article

Rays and wavefront charts in gradient mediaHELBIG, K.Geophysical prospecting. 1990, Vol 38, Num 2, pp 189-220, issn 0016-8025, 32 p.Article

Seismic research for karstification zones in the Visean limestone on the Northern flank of the Brabant massiv = Recherches par simique des zones de karstification dans le calcaire viséen du flanc nord du massif de BrabantHELBIG, K.1984, pp 134-138, EUR 8853ENArticle

Longitudinal directions in media of arbitrary anisotropyHELBIG, K.Geophysics. 1993, Vol 58, Num 5, pp 680-691, issn 0016-8033Article

Transverse isotropy in exploration seismics = Isotropie transversale dans la sismique de prospectionHELBIG, K.Geophysical journal of the Royal Astronomical Society. 1984, Vol 76, Num 1, pp 79-88, issn 0016-8009Article

Seismic impedance = Impédance sismiqueHELBIG, K.First break (Print). 1983, Vol 1, Num 3, pp 25-32, issn 0263-5046Article

A formalism for the consistent description of non-linear elasticity of anisotropic mediaHELBIG, K.Revue de l'Institut français du pétrole. 1998, Vol 53, Num 05, pp 693-708, issn 0020-2274, Numéro spécialArticle

Seismic research for karstification zones in the Visean limestone on the northern flank of the Brabant massivHELBIG, K.European geothermal update. International seminar. 3. sd, pp 134-138Conference Paper

EIN MODERNES SYSTEM DER INSPEKTION UND KONTROLLE DES WALDZUSTANDES ALS MITTEL ZUR STIMULIERUNG EINER INTENSIVEN WALDFONDSBEWIRTSCHAFTUNG = SYSTEME MODERNE D'INSPECTION ET DE CONTROLE DE L'ETAT DES PEUPLEMENTS FORESTIERS COMME MOYEN D'AMELIORATION DE L'AMENAGEMENT INTENSIF DU FONDS FORESTIERGROSSMANN H; SCHROEDER G; HELBIG K et al.1981; BEITR. FORSTWIRTSCH.; ISSN 0323-4673; DDR; DA. 1981; VOL. 15; NO 3-4; PP. 173-176Article

What can the polarisation of shear waves tell us? = Que peut nous dire la polarisation des ondes de cisaillement?DOUMA, J; HELBIG, K.First break (Print). 1987, Vol 5, Num 3, pp 95-104, issn 0263-5046Article

Orthorhombic media : Modeling elastic wave behavior in a vertically fractured earthSCHOENBERG, M; HELBIG, K.Geophysics. 1997, Vol 62, Num 6, pp 1954-1974, issn 0016-8033Conference Paper

High resolution reflection seismics on a tidal flat in the Dutch Delta-acquisition, processing and interpretation = Sismique réflexion à haute résolution sur des slikkes du Delta Hollandais: saisie, traitement et interprétationDOORNENBAL, J. C; HELBIG, K.First break (Print). 1983, Vol 1, Num 5, pp 9-20, issn 0263-5046Article

Seismic Investigations on an Artificial Gas Reservoir - A Large Scale Model Experiment = Recherches sismiques sur un réservoir artificiel de gaz. Une expérience sur modèle à grande échelleSCHMOLL, J; HELBIG, K.Erdöl und Kohle, Erdgas, Petrochemie. 1982, Vol 35, Num 5, pp 229-235, issn 0014-0058Article

Dead-time losses in pulsed radiation fieldsHELBIG, K; HENNIGER, J.Radiation measurements. 2012, Vol 47, Num 5, pp 383-388, issn 1350-4487, 6 p.Article

Onshore high-resolution seismic profiling applied to sedimentologyJONGERIUS, P; HELBIG, K.Geophysics. 1988, Vol 53, Num 10, pp 1276-1283, issn 0016-8033Article

Seismic research for karstification zones in the Visean limestone on the northern flank of the Brabant Massif = Recherche sismique de zones karstifiées dans le calcaire viséen du flanc nord du massif du BrabantBREDEWOUT, J. W; HELBIG, K.International seminar on the results of EC geothermal energy research. 3. 1985, pp 161-166Conference Paper

Anomalous polarization of elastic waves in transversely isotropic mediaHELBIG, K; SCHOENBERG, M.The Journal of the Acoustical Society of America. 1987, Vol 81, Num 5, pp 1235-1245, issn 0001-4966Article

ZUR GESCHICHTE DER GEOPHYSIK. = HISTOIRE DE LA GEOPHYSIQUEBIRETT H; HELBIG K; KERTZ W et al.1974; BERLIN; SPRINGER; DA. 1974; PP. 1-288; BIBL. DISSEM.; 84 ILL.; ISBN 3540070028Book

Calibration of the seismic stratigraphical response of tidal depositsJONGERIUS, P; BROUWER, J; HELBIG, K et al.World Petroleum congress. 12. 1987, pp 171-178Conference Paper

Weighted sum method for calculating ground force : an evaluation by using a portable vibrator systemVAN DER VEEN, M; BROUWER, J; HELBIG, K et al.Geophysical prospecting. 1999, Vol 47, Num 3, pp 251-267, issn 0016-8025Conference Paper

A novel I-TAC promoter polymorphic variant is functional in the presence of replicating HCV in vitroHELBIG, K. J; GEORGE, J; BEARD, M. R et al.Journal of clinical virology. 2005, Vol 32, Num 2, pp 137-143, issn 1386-6532, 7 p.Article