@article{05019305, title = {A note on self-extremal sets in }, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2005}, year = {2005}, pages = {3521-3526}, doi = {10.1155/IJMMS.2005.3521}, zbl = {1100.46019}, language = {en}, url = {http://dml.mathdoc.fr/item/05019305} }
Nguyen Khac Viet; Nguyen Van Khiem. A note on self-extremal sets in . International Journal of Mathematics and Mathematical Sciences, Tome 2005 (2005) pp. 3521-3526. doi : 10.1155/IJMMS.2005.3521. http://gdmltest.u-ga.fr/item/05019305/