@article{04004909, title = {An algebraic characterization of complete inner product spaces.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {9}, year = {1986}, pages = {47-53}, doi = {10.1155/S0161171286000066}, zbl = {0619.46018}, language = {en}, url = {http://dml.mathdoc.fr/item/04004909} }
Istratescu, Vasile I. An algebraic characterization of complete inner product spaces.. International Journal of Mathematics and Mathematical Sciences, Tome 9 (1986) pp. 47-53. doi : 10.1155/S0161171286000066. http://gdmltest.u-ga.fr/item/04004909/