CENTRAL STARS OF PLANETARY NEBULAE.ALLER LH.1976; MEM. SOC. R. SCI. LIEGE, 8E; BELG.; DA. 1976; VOL. 9; PP. 271-301; BIBL. 3 P. 1/2; (ASTROPHYS. SPECTROSC. COLLOQ. INT. ASTROPHYS. 20; LIEGE; 1975)Conference Paper

DISCOVERY OF THE EXCITING STAR IN THE NORTH AMERICA-PELICAN NEBULA COMPLEX.NECKEL T; HARRIS AW; EIROA C et al.1980; ASTRON. ASTROPHYS. (BERL.); ISSN 0004-6361; DEU; DA. 1980; VOL. 92; NO 3; PP. L9-L10; BIBL. 14 REF.Article

THE (O III) LINES AS A QUANTITATIVE INDICATOR OF NEBULAR CENTRAL STAR TEMPERATURE.KALER JB.1978; ASTROPHYS. J.; U.S.A.; DA. 1978; VOL. 220; NO 3 PART. 1; PP. 887-889; BIBL. 11 REF.Article

THE EXCITING STARS OF LOW-EXCITATION PLANETARY AND DIFFUSE NEBULAE.KALER JB.1976; ASTROPHYS. J.; U.S.A.; DA. 1976; VOL. 210; NO 3 PART. 1; PP. 843-852; BIBL. 44 REF.Article

THE CYGNUS X REGION. XII. ON THE EXCITATION AND DISTANCE OF THE GAMMA CYGNI HII REGIONAPPENZELLER I; WENDKER HJ.1980; ASTRON. ASTROPHYS. (BERL.); ISSN 0004-6361; DEU; DA. 1980; VOL. 89; NO 1-2; PP. 239-240; BIBL. 10 REF.Article

LA DISTANCE DE R MON ET NGC 2261GRINSTEJN DL; DAZARYAN MA; MAGAKYAN T YU et al.1977; ASTR. CIRK. IZDAV. BJURO ASTR. SOOBSHCH. AKAD. NAUK S.S.S.R.; S.S.S.R.; DA. 1977; NO 947; PP. 1-3Article

PHOTOMETRY OF THE STARS IN THE FIELDS OF EMISSION NEBULAE. III. IC 1795.OGURA K; ISHIDA K.1976; PUBL. ASTR. SOC. JAP.; JAP.; DA. 1976; VOL. 28; NO 4; PP. 651-664; BIBL. 29 REF.Article

He II emission in extragalactic H II regionsGARNETT, D. R; KENNICUTT, R. C; YOU-HUA CHU et al.The Astrophysical journal. 1991, Vol 373, Num 2, pp 458-464, issn 0004-637X, 7 p., p.1Article

PECULIAR CENTRAL STARS OF PLANETARY NEBULAE.LUTZ JH.1977; ASTR. AND ASTROPHYS.; GERM.; DA. 1977; VOL. 60; NO 1; PP. 93-100; BIBL. 66 REF.Article

STATISTICAL PROPERTIES OF PLANETARY NEBULAE: CENTRAL STARS.MINELLO S; SABBADIN F.1977; ASTR. AND ASTROPHYS.; GERM.; DA. 1977; VOL. 60; NO 2; PP. L9-L10; BIBL. 8 REF.Article

SOME COMMENTS ON THE ANALYSIS OF EXTRAGALACTIC HII REGIONS SPECTRASTASINSKA G.1980; ASTR. AND ASTROPHYS.; DEU; DA. 1980; VOL. 84; NO 3; PP. 320-328; BIBL. 2 P.Article

ON THE EVOLUTION OF CENTRAL STARS OF PLANETARY NEBULAE.YAHEL RZ.1977; ASTROPHYS. SPACE SCI.; NETHERL.; DA. 1977; VOL. 51; NO 1; PP. 135-152; BIBL. 51 REF.Article

EXISTE-T-IL UNE SEQUENCE EVOLUTIVE POUR LES SPECTRES DES NOYAUX DES NEBULEUSES PLANETAIRES.KHROMOV GS.1979; PIS'MA ASTR. ZH.; SUN; DA. 1979; VOL. 5; NO 4; PP. 195-197; ABS. ENG; BIBL. 6 REF.Article

THE SPECTRUM OF HM SAGITTAE: A PLANETARY NEBULA EXCITED BY A WOLF-RAYET STAR.BROWN LW.1978; ASTROPHYS. LETTERS; U.S.A.; DA. 1978; VOL. 19; NO 3; PP. 75-79; BIBL. 11 REF.Article

UBVRI photometry of stars in several HII regionsLAHULLA, J. F.Astronomy & astrophysics. Supplement Series (Print). 1985, Vol 61, Num 3, pp 537-545, issn 0365-0138Article

The exciting stars of Herbig-Haro objects and their relationship to T Tauri starsCOHEN, M.Revista Mexicana de Astronomía y Astrofísica. 1983, Vol 7, pp 241-251, issn 0185-1101Article

The source of illumination of the bipolar nebula near NGC 7129DRAPER, P. W; WARREN-SMITH, R. F; SCARROTT, S. M et al.Monthly Notices of the Royal Astronomical Society. 1985, Vol 212, Num 1, pp 5P-8P, issn 0035-8711Article

The galactic rotation outside the solar circleCHINI, R; WINK, J. E.Astronomy and astrophysics (Berlin. Print). 1984, Vol 139, Num 1, pp L5-L8, issn 0004-6361Article

New colour and Zanstra temperatures for 15 central stars of planetary nebulaeDE FREITAS PACHECO, J. A; CODINA, S. J; VIADANA, L et al.Monthly Notices of the Royal Astronomical Society. 1986, Vol 220, Num 1, pp 107-117, issn 0035-8711Article

THE EXCITING STAR OF HERBIG-HARO OBJECT 1COHEN M; SCHWARTZ RD.1979; ASTROPHYS. J.; USA; DA. 1979; VOL. 233; NO 2 PART. 2; PP. L77-L80; BIBL. 8 REF.Article

ON THE HII REGION NGC 1499 AND XI PERSEI.SHINOHARA M; ISHIDA K.1976; PUBL. ASTR. SOC. JAP.; JAP.; DA. 1976; VOL. 28; NO 3; PP. 437-449; BIBL. 33 REF.Article

SPECTRE D'ENERGIE L_C DE LA SOURCE RESPONSABLE DE L'EMISSION DE LA NEBULEUSE T. TAURIGOLOVATYJ VV; SHPYCHKA IV.1976; ASTROFIZIKA, ARM. S.S.R.; S.S.S.R.; DA. 1976; VOL. 12; NO 4; PP. 613-622; ABS. ANGL.; BIBL. 17 REF.Article

EXCITATION AND NATURE OF THE BIPOLAR NEBULA S 106EIROA C; ELSASSER H; LAHULLA JF et al.1979; ASTR. AND ASTROPHYS.; DEU; DA. 1979; VOL. 74; NO 1; PP. 89-92; BIBL. 16 REF.Article

THE CYGNUS X REGION X: THE RIDDLE OF THE GAMMA CYGNI RADIO SOURCE RESOLVED.BAARS JWM; DICKEL HR; WENDKER HJ et al.1978; ASTR. AND ASTROPHYS.; GERM.; DA. 1978; VOL. 62; NO 1-2; PP. 13-20; BIBL. 20 REF.Article

DECOUVERTE DE L'ETOILE EXCITATRICE DE LA NEBULEUSE GAMMA CYGARKHIPOVA VP; LOZINSKAYA TA.1978; ASTR. ZH.; SUN; DA. 1978; VOL. 55; NO 6; PP. 1320-1321; BIBL. 8 REF.Article