00327nam a2200121Ia 4500082002100000100002300021245004500044260003500089300002000124490005100144500000500195700000500200  a519.936bL495.SN  aLafschetz, Solomon  aStability of nonlinear control systemsb  aNew YorkbAcademic Pressc1968  axi, 150p. Index  aMathematics in Science and Engineeringv v. 13  a  a