00644nam a2200181Ia 4500082002000000100004000020245010000060260003500160300002800195490005200223500000500275690000600280700003000286952010200316964001700418921001000435999001700445  a515.35bEl49.IT  aEl'sgol'ts, L. E. and Norkin, S. B.  aIntroduction to the theory and application of differential equations with deviating argumentsb  aNew YorkbAcademic Pressc1973  axiv, 357p. Index, Bibl.  aMathematics in Science and Engineeringv v. 105  a  a   aNorkin, S. B. ; jt. auth.  00104070aISIbISId1998-09-23l0o515.35 El49.ITpDP13303r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a13482  c13482d13482