@article{04208148, title = {Generalized sum-free subsets.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {13}, year = {1990}, pages = {751-754}, doi = {10.1155/S016117129000103X}, zbl = {0731.11010}, language = {en}, url = {http://dml.mathdoc.fr/item/04208148} }
Caro, Yair. Generalized sum-free subsets.. International Journal of Mathematics and Mathematical Sciences, Tome 13 (1990) pp. 751-754. doi : 10.1155/S016117129000103X. http://gdmltest.u-ga.fr/item/04208148/