Reid, William T. 1907 Oct. 4-1977. Sturmian theory for ordinary differential equations / William T. Reid. - New York : Springer-Verlag, c1980. - xv, 559 p. - Applied mathematical sciences ; v. 31 . - Applied mathematical sciences (Springer-Verlag New York Inc.) ; v. 31. . ISBN: 0387905421 Subjects--Topical Terms: Differential equations. LC Class. No.: QA1 QA372 / .A647 vol. 31 Dewey Class. No.: 510 s 515.3/52�19