@article{GDZPPN002357046, title = {Volterra integral operators and logarithmic convexity.}, journal = {Mathematica Scandinavica}, volume = {50}, year = {1982}, pages = {209-220}, zbl = {0495.45012}, url = {http://dml.mathdoc.fr/item/GDZPPN002357046} }
Gripenberg, Gustaf. Volterra integral operators and logarithmic convexity.. Mathematica Scandinavica, Tome 50 (1982) pp. 209-220. http://gdmltest.u-ga.fr/item/GDZPPN002357046/