On 2-ranks of Steiner triple systems.
Assmus, E.F.jun.
The Electronic Journal of Combinatorics [electronic only], Tome 2 (1995), / Harvested from The Electronic Library of Mathematics
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Publié le : 1995-01-01
EUDML-ID : urn:eudml:doc:226458 
@article{00748397,
     title = {On 2-ranks of Steiner triple systems.},
     journal = {The Electronic Journal of Combinatorics [electronic only]},
     volume = {2},
     year = {1995},
     zbl = {0815.05016},
     language = {en},
     url = {http://dml.mathdoc.fr/item/00748397}
}

Assmus, E.F.jun. On 2-ranks of Steiner triple systems.. The Electronic Journal of Combinatorics [electronic only], Tome 2 (1995) . http://gdmltest.u-ga.fr/item/00748397/