In mathematical models of some physical phenomena a new class of nonlinear Volterra equations appears ([5],[6]). The equations belonging to this class have u = 0 as a solution (trivial solution), but with respect to their physical meaning, nonnegative nontrivial solutions are of prime importance.
@article{urn:eudml:doc:39946,
title = {Boyd index and nonlinear Volterra equations.},
journal = {Extracta Mathematicae},
volume = {6},
year = {1991},
pages = {170-172},
mrnumber = {MR1185370},
language = {en},
url = {http://dml.mathdoc.fr/item/urn:eudml:doc:39946}
}
Fernández Castillo, Jesús M.; Okrasinski, W. Boyd index and nonlinear Volterra equations.. Extracta Mathematicae, Tome 6 (1991) pp. 170-172. http://gdmltest.u-ga.fr/item/urn:eudml:doc:39946/