00340nam a2200121Ia 4500082002000000100001600020245006500036260003500101300002100136490005100157500000500208700000500213  a515.35bH157.DE  aHalanay, A.  aDifferential equations; stability, oscillations, time lagsb  aNew YorkbAcademic Pressc1966  axii, 528p. Index  aMathematics in Science and Engineeringv v. 23  a  a