The four known biplanes with k=11.
Salwach, Chester J. ; Mezzaroba, Joseph A.
International Journal of Mathematics and Mathematical Sciences, Tome 2 (1979), p. 251-260 / Harvested from The Electronic Library of Mathematics
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Publié le : 1979-01-01
DOI : https://doi.org/10.1155/S0161171279000235
EUDML-ID : urn:eudml:doc:44799 
@article{03638647,
     title = {The four known biplanes with k=11.},
     journal = {International Journal of Mathematics and Mathematical Sciences},
     volume = {2},
     year = {1979},
     pages = {251-260},
     doi = {10.1155/S0161171279000235},
     zbl = {0411.51006},
     language = {en},
     url = {http://dml.mathdoc.fr/item/03638647}
}

Salwach, Chester J.; Mezzaroba, Joseph A. The four known biplanes with k=11.. International Journal of Mathematics and Mathematical Sciences, Tome 2 (1979) pp. 251-260. doi : 10.1155/S0161171279000235. http://gdmltest.u-ga.fr/item/03638647/