Author: Sekanina, Zdeněk

Sekanina, Zdeněk: Beyer's method of cometary brightness dispersion as a criterion of cometary activity. (English). Acta Universitatis Carolinae. Mathematica, vol. 2 (1961), issue 1, pp. 15-18
Sekanina, Zdeněk: New methods of determining the parameters of the photometrical curve of a comet dust-gas model. (English). Acta Universitatis Carolinae. Mathematica, vol. 2 (1961), issue 1, pp. 19-27
Sekanina, Zdeněk: Periodical changes in the activity of the Encke comet. (English). Acta Universitatis Carolinae. Mathematica, vol. 2 (1961), issue 1, pp. 7-14
Sekanina, Zdeněk: Short-term changes in the colour index of the head and tail of the comet Arend-Roland 1956h. (English). Acta Universitatis Carolinae. Mathematica, vol. 2 (1961), issue 1, pp. 1-6
Sekanina, Zdeněk: Variation of the production of solar radiation during eleven-year cycle of solar activity in the wave-length range 620 Å to 11000 Å. (English). Acta Universitatis Carolinae. Mathematica, vol. 2 (1961), issue 1, pp. 29-55