Intensity distribution of Cyanogen and Carbon bands in comet Everhart (1964 h) Vladimír Vanýsek; P. Žáček — 1967 Acta Universitatis Carolinae. Mathematica et Physica
Motion of cometary particle with variable mass under central fields of forces P. Žáček; Vladimír Vanýsek — 1981 Acta Universitatis Carolinae. Mathematica et Physica