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@article{JRAM_1974__267_151434, author = {Philip Pratt}, title = {Operations in {Lapan's} class {B*.}}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {67--73}, publisher = {mathdoc}, volume = {267}, year = {1974}, zbl = {0284.30021}, url = {http://geodesic.mathdoc.fr/item/JRAM_1974__267_151434/} }
Philip Pratt. Operations in Lapan's class B*.. Journal für die reine und angewandte Mathematik, Tome 267 (1974), pp. 67-73. http://geodesic.mathdoc.fr/item/JRAM_1974__267_151434/