@incollection{JEDP_1991____A15_0, author = {Laptev, Ari and Safarov, Yu}, title = {Error estimate in the generalized {Szeg\"o} theorem}, booktitle = {}, series = {Journ\'ees \'equations aux d\'eriv\'ees partielles}, eid = {15}, pages = {1--7}, publisher = {Ecole polytechnique}, year = {1991}, mrnumber = {92j:35141}, zbl = {0743.58032}, language = {en}, url = {http://archive.numdam.org/item/JEDP_1991____A15_0/} }