TY  - GEN
AU  - Coffman, C. V
AU  -  Wong, James S. W
TI  - Oscillation and Nonoscillation Theorems for Sublinear Second Order Differential Equations
PY  - 1969///
CY  - Pittsburgh
PB  - Carnegie - Mellon University
N1  - Contine bibliografie; Lucrarea este multigrafiata
ER  -