Voir la notice de l'article provenant de la source Czech Digital Mathematics Library
@article{CMUC_1990__31_2_a24, author = {Pol\'ak, Jaroslav}, title = {Aggregation and disaggregation in {Markov} chains}, journal = {Commentationes Mathematicae Universitatis Carolinae}, pages = {403--404}, publisher = {mathdoc}, volume = {31}, number = {2}, year = {1990}, language = {en}, url = {http://geodesic.mathdoc.fr/item/CMUC_1990__31_2_a24/} }
Polák, Jaroslav. Aggregation and disaggregation in Markov chains. Commentationes Mathematicae Universitatis Carolinae, Tome 31 (1990) no. 2, pp. 403-404. http://geodesic.mathdoc.fr/item/CMUC_1990__31_2_a24/