@article{NSJOM_2011_41_2a_4,
     author = {P. K. Harikrishnan, and P. Riyas, and K. T. Ravindran},
     title = {Riesz theorems in 2-inner product spaces},
     journal = {Novi Sad Journal of Mathematics},
     pages = {57-61},
     publisher = {mathdoc},
     volume = {41},
     number = {2},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2011_41_2a_4/}
}