@article{10_4153_CJM_1970_008_0,
     author = {Hanani, Haim},
     title = {On {Balanced} {Incomplete} {Block} {Designs} with {Large} {Number} of {Elements}},
     journal = {Canadian journal of mathematics},
     pages = {61--65},
     year = {1970},
     volume = {22},
     number = {1},
     doi = {10.4153/CJM-1970-008-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1970-008-0/}
}