Selected studies, physics-astrophysics, mathematics, history of science : a volume dedicated to the memory of Albert Einstein - Ρασσιάς, Θεμιστοκλής Μ.; Ρασσιάς, Γεώργιος Μ.; Einstein, Albert, 1879-1955 (North-Holland Pub. Co. ; Elsevier North-Holland, Sole distributors for the USA and Canada, 1982)