$a Estoński astronom. Od 1944 w Niemczech, od 1948 w Irlandii Płn.
670
$a Interplanetary encounters / Ernst J. Öpik. - Amsterdam [etc.], 1976. $b (Department of Physics and Astronomy University of Maryland, College Park, Md., U. S. A. and Armagh Observatory, Armagh Northen Ireland, Great Britain)