TY  - JOUR
AU  - Vatsala, A. S.
AU  - Vaughn, R. L.
TI  - Existence of extremal solutions and comparison results for delay differential equations in abstract cones
JO  - Rendiconti del Seminario Matematico della Università di Padova
PY  - 1981
SP  - 1
EP  - 14
VL  - 64
PB  - Seminario Matematico of the University of Padua
UR  - http://archive.numdam.org/item/RSMUP_1981__64__1_0/
LA  - en
ID  - RSMUP_1981__64__1_0
ER  -