@article{10_4064_am_17_3_377_399,
     author = {R. Syski},
     title = {Phase-type distributions and perturbation model},
     journal = {Applicationes Mathematicae},
     pages = {377--399},
     publisher = {mathdoc},
     volume = {17},
     number = {3},
     year = {1980},
     doi = {10.4064/am-17-3-377-399},
     zbl = {0515.60076},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-17-3-377-399/}
}