@article{1181073162, author = {Dekker, J.C.E.}, title = {Counting finite subsets of an immune set}, journal = {Rocky Mountain J. Math.}, volume = {20}, number = {4}, year = {1990}, pages = { 99-106}, language = {en}, url = {http://dml.mathdoc.fr/item/1181073162} }
Dekker, J.C.E. Counting finite subsets of an immune set. Rocky Mountain J. Math., Tome 20 (1990) no. 4, pp. 99-106. http://gdmltest.u-ga.fr/item/1181073162/