@article{KYB_2011_47_1_a0,
     author = {Swart, Jan M.},
     title = {Intertwining of birth-and-death processes},
     journal = {Kybernetika},
     pages = {1--14},
     year = {2011},
     volume = {47},
     number = {1},
     mrnumber = {2807860},
     zbl = {1221.60125},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2011_47_1_a0/}
}