Observations of comets and asteroids at the Kleť observatory in the year 1973 A. Mrkos (1975) Acta Universitatis Carolinae. Mathematica et Physica Similarity:
Observations of comets and asteroids at the Kleť Observatory in the year 1975 A. Mrkos (1977) Acta Universitatis Carolinae. Mathematica et Physica Similarity:
Observations of comets and asteroids at the Kleť Observatory in the year 1971 A. Mrkos (1972) Acta Universitatis Carolinae. Mathematica et Physica Similarity: