TY  - DATA
AU  - Howes, Frederick A.
TI  - Singular perturbations and differential inequalities 
T2  - Memoirs of the American Mathematical Society, 
SN  - 9781470407148 (online)
PY  - 1976///
CY  - Providence
PB  - American Mathematical Society
UR  - http://www.ams.org/memo/0168
ER  -