TY  - BOOK
AU  - Gripenberg, G.
AU  - Londen, S O
AU  - Staffens, O
TI  - Volterra integral and functional equations
SN  - 0521372895
U1  - 515.42 
PY  - 1990///
CY  - Cambridge
PB  - Cambridge University Press
KW  - Functional equations - Volterra integral
ER  -