OPTICAL PROPERTIES OF X-RAY STARS. II: THE SECULAR BRIGHTNESS VARIATIONS OF THE X-RAY SYSTEM V 818 SCO/SCO X-1HUDEC R.1981; BULL. ASTR. INST. CZECHOSL.; CSK; DA. 1981; VOL. 32; NO 2; PP. 108-120; ABS. RUS; BIBL. 32 REF.Article

A NEW FLARE STAR IN CASSIOPEIA.HUDEC R.1978; COMMISS. 27 I.A.U., INFORM. BULL. VAR. STARS; HUN; DA. 1978; NO 1435; PP. 1-2; BIBL. 3 REF.Serial Issue

PHOTOGRAPHIC OBSERVATIONS OF THE X-RAY NOVA MONOCEROTIS 1975.HUDEC R.1977; BULL. ASTR. INST. CZECHOSL.; CZECHOSL.; DA. 1977; VOL. 28; NO 6; PP. 374-375; ABS. RUSSE; BIBL. 2 REF.Article

OPTICAL BEHAVIOUR OF HZ HER/HER X-1 IN 1977HUDEC R.1978; BULL. ASTR. INST. CZECHOSL.; CSK; DA. 1978; VOL. 29; NO 5; PP. 318-319; ABS. RUS; BIBL. 3 REF.Article

OPTICAL BEHAVIOUR OF HZ HER/HER X-1 IN 1976.HUDEC R.1977; BULL. ASTR. INST. CZECHOSL.; CZECHOSL.; DA. 1977; VOL. 28; NO 6; PP. 376; BIBL. 2 REF.Article

UNTERSUCHUNGEN AN HDE 245770, KANDIDAT FUER DIE ROENTGENQUELLE A 0535+26. II. = ETUDE DE HDE 245770, CANDIDAT POUR LA SOURCE RX A 0535+26. IIHUDEC R.1976; MITT. VERAENDERL. STERNE; DTSCH.; DA. 1976; VOL. 7; NO 6; PP. 135; ABS. ANGL.; BIBL. 2 REF.Article

SEARCH FOR LONG-TIME LIGHT VARIATIONS OF V 1357 CYG/CYG X-1HUDEC R.1979; BULL. ASTR. INST. CZECHOSL.; CSK; DA. 1979; VOL. 30; NO 4; PP. 250-251; ABS. RUS; BIBL. 9 REF.Article

SPEKTRALUNTERSUCHUNG VON HALPHA -STERNEN IM GEBIET DES NORDAMERIKANEBELS. = ETUDE SPECTRALE DES ETOILES HALPHA DANS LA REGION DE LA NEBULEUSE AMERICAHUDEC R.1975; MITT. VERAENDERL. STERNE; DTSCH.; DA. 1975; VOL. 6; NO 8; PP. 171; BIBL. 2 REF.Article

CV in Corvus : no outbursts on Bamberg platesHUDEC, R.Information bulletin on variable stars. 1992, Num 3706, issn 0374-0676, 2 p.Serial Issue

Optical study in the field of FY Aql/GRBS 1979 0331HUDEC, R.Bulletin of the Astronomical Institutes of Czechoslovakia. 1989, Vol 40, Num 4, pp 261-266, issn 0004-6248Article

More about Fy AgP and GRBS 790331HUDEC, R.Information bulletin on variable stars. 1987, Num 3121, issn 0374-0676, 2 p.Serial Issue

Possible optical counterpart to the GRBS 1979 March 25B (1810+31)HUDEC, R.Information bulletin on variable stars. 1986, Num 2948, issn 0374-0676, 2 p.Serial Issue

LONG TIME OPTICAL BEHAVIOUR OF AM HER= 3U 1809+50.HUDEC R; MEINUNGER L.1977; MITT. VERAENDERL. STERNE; DTSCH.; DA. 1977; VOL. 7; NO 8; PP. 194-197; BIBL. 8 REF.Article

ACTIVE AND INACTIVE STATE OF AMHER=3U 1809+50.HUDEC R; MEINUNGER L.1976; COMMISS. 27 I.A.U., INFORM. BULL. VAR. STARS; HUNGARY; DA. 1976; NO 1184; PP. (2P.)Serial Issue

Optical transients: an open questionHUDEC, R.Astrophysical letters & communications. 1993, Vol 28, Num 6, pp 359-380, issn 0888-6512Article

Optical properties of X-ray stars. III: Search for active and inactive states in the X-ray system HZ Her/Her X-1HUDEC, R.Bulletin of the Astronomical Institutes of Czechoslovakia. 1984, Vol 35, Num 2, pp 78-87, issn 0004-6248Article

Photometric behavior of GK Per=A 0327+43 in 1979-1982HUDEC, R.Bulletin of the Astronomical Institutes of Czechoslovakia. 1984, Vol 35, Num 3, pp 150-153, issn 0004-6248Article

INACTIVE STATE OF HZ HER.WENZEL W; HUDEC R.1976; COMMISS. 27 I.A.U., INFORM. BULL. VAR. STARS; HUNGARY; DA. 1976; NO 1082; PP. (2P.)Serial Issue

BEITRAG ZUR PROBLEMATIK DER NITRATBESTIMMUNG. I. NITRABESTIMMUNG IN PFLANZEN = CONTRIBUTION AU PROBLEME DU DOSAGE DES NITRATES. I. DOSAGE DES NITRATES DANS LES PLANTESMEHNERT E; HUDEC R.1972; ARCH. EXPER. VETER.-MED.; DTSCH.; DA. 1972; VOL. 26; NO 2; PP. 215-219; ABS. RUSSE ANGL.; BIBL. 9REF.Serial Issue

PHOTOGRAPHISCHE PHOTOMETRIE EINIGER HALPHA -STERNE IM GEBIET DES NORDAMERIKANEBELS. = PHOTOMETRIE PHOTOGRAPHIQUE DE QUELQUES ETOILES HALPHA DANS LA REGION DE LA NEBULEUSE AMERIKAHUDEC R; JUZA K; ROSSIGER S et al.1974; MITT. VERANDERL. STERNE; DTSCH.; DA. 1974; VOL. 6; NO 6; PP. 131-132; ABS. ANGL.; BIBL. 4 REF.Article

LIGHT VARIATION OF V 1294 AQL IN THE PAST 50 YEARSHORN J; HUDEC R; KOUBSKY P et al.1983; INFORMATION BULLETIN ON VARIABLE STARS; ISSN 0374-0676; HUN; DA. 1983; NO 2304; 2 P.; BIBL. 1 REF.Serial Issue

Photographic photometry of V 1727 Cyg=4U 2129+47 during 1972-1983HUDEC, R; WENZEL, W.Bulletin of the Astronomical Institutes of Czechoslovakia. 1990, Vol 41, Num 6, pp 355-356, issn 0004-6248, 2 p.Article

Background events in optical transient searches on astronomical platesVARADY, M; HUDEC, R.Astronomy and astrophysics (Berlin. Print). 1992, Vol 261, Num 1, pp 365-371, issn 0004-6361Article

More about active and inactive states of HZ Her=Her X-1HUDEC, R; WENZEL, W.Astronomy and astrophysics (Berlin. Print). 1986, Vol 158, Num 1-2, pp 396-398, issn 0004-6361Article

History of Grazing Incidence X-ray Optics in the Czech RepublicHUDEC, R.Proceedings of SPIE, the International Society for Optical Engineering. 2009, Vol 7360, issn 0277-786X, isbn 978-0-8194-7634-0 0-8194-7634-X, 1Vol, 73600D.1-73600D.15Conference Paper