00544nam a2200181Ia 4500082002300000100003200023245002800055260002700083300002600110490006400136500000500200690000600205700000500211952010500216964001700321921000900338999001500347  a658.4033bAv963.GC  aZvriel, Mordecai and Others  aGeneralized concavityb  aNew YorkbPlenumc1988  ax, 332p. Index, Bibl.  aMathematical concepts and methods in Science and Engg. v.36  a  a   a  00104070aISIbISId1998-09-08l0o658.4033 Av963.GCpDP22085r2019-02-14 00:00:00w2019-02-14yBK  abcdefg  a9448  c9448d9448