"The Gravitational Equations and the Problem of Motion"@nl . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0432 \u0441\u0456\u0447\u043D\u0456 1938"@uk . . "wetenschappelijk artikel"@nl . . . . "The Gravitational Equations and the Problem of Motion"@en . . . . "64.0769.01" . "The Gravitational Equations and the Problem of Motion"@nl . . . "10.2307/1968714" . . . . "The Gravitational Equations and the Problem of Motion"@nl . . "The Gravitational Equations and the Problem of Motion"@en . . . . "The Gravitational Equations and the Problem of Motion"@en . "0018.28103" . . "65" . . "1968714" . . "1" . "1938-01-01T00:00:00Z"^^ . . . "The Gravitational Equations and the Problem of Motion"@en . . . "39" . . .