BIRKHOFFS THEORY OF GRAVITATION AND EINSTEINS THEORY FOR WEAK FIELDS - BARAJAS, A (UNIVERSIDAD NACIONAL AUTONOMA DE MEXICO, INSTITUTO DE MATEMATICAS, CD. MEXICO, DF, MEX, 1972)
SCIENCE
Keywords: BIRKHOFFS, THEORY, GRAVITATION, EINSTEINS, THEORY, WEAK FIELDS; MULTIDISCIPLINARIA; HISTORIA GENERAL; TEORIAS Y METODOS