@article{MET_1997__46_1_186256,
     author = {Michael Cramer},
     title = {Convergence of a {Branching} {Type} {Recursion} with {Non-Stationary} {Immigration.}},
     journal = {Metrika},
     pages = {187--212},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {1997},
     zbl = {0920.60008},
     url = {http://geodesic.mathdoc.fr/item/MET_1997__46_1_186256/}
}