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@article{ARM_1984__20_3_a4, author = {Barv{\'\i}nek, Erich}, title = {Antiprojectors with applications in the spectral theory}, journal = {Archivum mathematicum}, pages = {141--147}, publisher = {mathdoc}, volume = {20}, number = {3}, year = {1984}, mrnumber = {784865}, zbl = {0576.47018}, language = {en}, url = {http://geodesic.mathdoc.fr/item/ARM_1984__20_3_a4/} }
Barvínek, Erich. Antiprojectors with applications in the spectral theory. Archivum mathematicum, Tome 20 (1984) no. 3, pp. 141-147. http://geodesic.mathdoc.fr/item/ARM_1984__20_3_a4/