@article{GDZPPN002347520, title = {Zero-Free Intervals of Semi-Stable Markov Processes.}, journal = {Mathematica Scandinavica}, volume = {14}, year = {1964}, pages = {21-34}, zbl = {0132.12802}, url = {http://dml.mathdoc.fr/item/GDZPPN002347520} }
Wendel, J.G. Zero-Free Intervals of Semi-Stable Markov Processes.. Mathematica Scandinavica, Tome 14 (1964) pp. 21-34. http://gdmltest.u-ga.fr/item/GDZPPN002347520/