@article{05636433,
title = {General branching processes conditioned on extinction are still branching processes.},
journal = {Electronic Communications in Probability [electronic only]},
volume = {13},
year = {2008},
pages = {540-547},
zbl = {1189.60158},
language = {en},
url = {http://dml.mathdoc.fr/item/05636433}
}
Jagers, Peter; Lagerås, Andreas Nordvall. General branching processes conditioned on extinction are still branching processes.. Electronic Communications in Probability [electronic only], Tome 13 (2008) pp. 540-547. http://gdmltest.u-ga.fr/item/05636433/