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 comets and asteroids at the Kleť Observatory in the year 1972 A. Mrkos (1972) Acta Universitatis Carolinae. Mathematica et Physica Similarity:
Observations of comets and asteroids at the Kleť Observatory in the Year 1978 A. Mrkos (1980) Acta Universitatis Carolinae. Mathematica et Physica Similarity: