Observations of comets and asteroids at the Kleť Observatory in the year 1976 A. Mrkos (1978) Acta Universitatis Carolinae. Mathematica et Physica Similarity:
Observations of coments and asteroids at the Kleť Observatory in the year 1974 A. Mrkos (1976) Acta Universitatis Carolinae. Mathematica et Physica Similarity:
Observations of comets and asteroids at the Kleť Observatory in the year 1979 A. Mrkos (1980) Acta Universitatis Carolinae. Mathematica et Physica Similarity: