http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Domains of non-oscillation of second-order differential equations with two parameters and their extensions
106 pages, 3 unnumbered pages : illustrations
Angelo B. Mingarelli, S. Gotskalk Halvorsen.
Lecture notes in mathematics (Springer-Verlag) ; 1338