@article{1183537427, author = {Williams, David}, title = {The $Q$-matrix problem for Markov chains}, journal = {Bull. Amer. Math. Soc.}, volume = {81}, number = {4}, year = {1975}, pages = { 1115-1118}, language = {en}, url = {http://dml.mathdoc.fr/item/1183537427} }
Williams, David. The $Q$-matrix problem for Markov chains. Bull. Amer. Math. Soc., Tome 81 (1975) no. 4, pp. 1115-1118. http://gdmltest.u-ga.fr/item/1183537427/