@article{GDZPPN002414872,
title = {Intersection Triangles and Block Intersection Numbers of Steiner Systems.},
journal = {Mathematische Zeitschrift},
volume = {136},
year = {1974},
pages = {87-104},
zbl = {0276.05018},
url = {http://dml.mathdoc.fr/item/GDZPPN002414872}
}
Gross, Benedict H. Intersection Triangles and Block Intersection Numbers of Steiner Systems.. Mathematische Zeitschrift, Tome 136 (1974) pp. 87-104. http://gdmltest.u-ga.fr/item/GDZPPN002414872/