@article{106872,
author = {Jaroslav Pol\'ak},
title = {Aggregation and disaggregation in Markov chains},
journal = {Commentationes Mathematicae Universitatis Carolinae},
volume = {031},
year = {1990},
pages = {403-404},
language = {en},
url = {http://dml.mathdoc.fr/item/106872}
}
Polák, Jaroslav. Aggregation and disaggregation in Markov chains. Commentationes Mathematicae Universitatis Carolinae, Tome 031 (1990) pp. 403-404. http://gdmltest.u-ga.fr/item/106872/
On the convergence of Neumann series in Banach space, Math. Ann. 220 (1976), 143-146. (1976) | MR 0412855 | Zbl 0304.47016