00304nam a2200121Ia 4500082001900000100002500019245005000044260003600094300000600130490003600136500000500172700000500177  a530.1bR537.PA  aRichtmyer, Robert D.  aPrinciples of advanced mathematical physicsb  aNew YorkbSpringer-Verlagc1978  a   aTexts and monographs in Physics  a  a