@article{10_21136_AM_1964_102921,
     author = {Hor\'alek, Vratislav},
     title = {On some types of nonhomogeneous birth-immigration-death processes},
     journal = {Applications of Mathematics},
     pages = {421--434},
     publisher = {mathdoc},
     volume = {09},
     number = {6},
     year = {1964},
     doi = {10.21136/AM.1964.102921},
     mrnumber = {0185678},
     zbl = {0134.34901},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1964.102921/}
}