@article{GMJ_2001__8_2_50164, author = {Chelidze, G.}, title = {On a characterisation of inner product spaces.}, journal = {Georgian Mathematical Journal}, pages = {231--236}, publisher = {mathdoc}, volume = {8}, number = {2}, year = {2001}, zbl = {1016.46024}, language = {en}, url = {http://geodesic.mathdoc.fr/item/GMJ_2001__8_2_50164/} }