@article{05847823, title = {Contractions of product density operators of systems of identical fermions and bosons.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2010}, year = {2010}, doi = {10.1155/2010/890523}, zbl = {1222.81119}, language = {en}, url = {http://dml.mathdoc.fr/item/05847823} }
Radzki, Wiktor. Contractions of product density operators of systems of identical fermions and bosons.. International Journal of Mathematics and Mathematical Sciences, Tome 2010 (2010) . doi : 10.1155/2010/890523. http://gdmltest.u-ga.fr/item/05847823/