@article{GDZPPN001261908, title = {Boundary conditions for one-dimensional positive semigroups.}, journal = {Semigroup forum}, volume = {44}, year = {1992}, pages = {92-119}, zbl = {0778.47033}, url = {http://dml.mathdoc.fr/item/GDZPPN001261908} }
Ulmet, M.G. Boundary conditions for one-dimensional positive semigroups.. Semigroup forum, Tome 44 (1992) pp. 92-119. http://gdmltest.u-ga.fr/item/GDZPPN001261908/