@article{GDZPPN002440393, title = {Non-commutative symmetric Markov semigroups.}, journal = {Mathematische Zeitschrift}, volume = {209}, year = {1992}, pages = {379-412}, zbl = {0761.46051}, url = {http://dml.mathdoc.fr/item/GDZPPN002440393} }
Davies, E. Brian; Lindsay, J. Martin. Non-commutative symmetric Markov semigroups.. Mathematische Zeitschrift, Tome 209 (1992) pp. 379-412. http://gdmltest.u-ga.fr/item/GDZPPN002440393/