E.H. Geyer  Astronom, Physiker & Naturwissenschaftler
A photometric study of the RRSS-star CY Aquarii (gemeinsam mit M. Hoffmann) Astron. & Astrophys. Suppl. 21,177 (1975) A two colour photometry of the short period RR Lyrae star DY Pegasi (gemeinsam mit M. Hoffmann) Astron. & Astrophys. Suppl. 21,183 (1975) Improved light elements for the eclipsing binaries RZ Cha, YZ Cha and DZ Mus (gemeinsam mit R. Knigge) Inf. Bull. Var. Stars No. 941 (1974) New variable stars around My Cephei (gemeinsam mit F. Gieseking) Inf. Bull. Var. Stars No. 967 (1975) Starspot activities as an interpretation for the light curve changes of the chlose binary star XY UMa Proc. IAU Symposium No. 73, Cambridge U.K., 1975 Cyclic light curve changes of the short period eclipsing binary XY UMa Proc. IAU Colloquium No. 29, Budapest, 1975 Veränderliche Sterne in KugelsternhaufenSterne und Weltraum 10, 316, 1974 Variable Sterne in alten Sternpopulationen "The Future of Science", Moskau, 1976 (in Russisch) Zur Verwendung von Gitterprismen in der Astrospektroskopie (gemeinsam mit H. Schmidt) Mitt. Astron. Ges. 40, (1976) Remarks on erratic period fluctuations of detached close binaries and the constancy of the orbital period of XY UMa Astrophys. & Space Sci. 48, 137 (1977) On the light curve and period of V743 Cen (gemeinsam mit N. Vogt) Inf. Bull. Var. Stars No. 1172 (1976) Further Comments on the period of V743 Cen Inf. Bull. Var. Stars No. 1208 (1976) A period finding programHewlett-Packard Calculator Users Club, Log. No. 1093, (1976) The splitting of the head of Comet West 1975n (gemeinsam mit M. Hoffmann) IAU Circular No. 2924 (1976) Gedenken zum 500. Todestage von J. Müller, genannt Regiomontanus, und zum 150. Todestage von Fraunhofer Berichte Naturforschenden Gesell. Bamberg, 1977 A morphological investigation of the Large Magellanic Cloud Mitt. Astron. Ges. No. 42 (1977) A polarimetric investigation of the eclipsing binary XY Ursae Majoris (gemeinsam mit K. Metz) Astrophys. & Space Sci. 52, 351 (1977) Is XY Ursae Majoris a radio star? Proc. IAU Colloquium 42, Veröff.Bamberg XI, Nr.100, p.292 (1977