@article{DMPS_2004_24_1_a1,
     author = {Mohan, R. and Kageyama, Sanpei and Nair, M.},
     title = {On a characterization of symmetric balanced incomplete block designs},
     journal = {Discussiones Mathematicae. Probability and Statistics},
     pages = {41--58},
     publisher = {mathdoc},
     volume = {24},
     number = {1},
     year = {2004},
     zbl = {1050.05017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMPS_2004_24_1_a1/}
}