There are exactly five biplanes with

Reference:

Petteri Kaski and Patric R. J. Östergård. There are exactly five biplanes with . Journal of Combinatorial Designs, 16(2):117–127, 2008.

Suggested BibTeX entry:

@article{bibdb-export-pkaski-2008-28,
    author = {Petteri Kaski and Patric R. J. {\"O}sterg{\aa}rd},
    journal = {Journal of Combinatorial Designs},
    number = {2},
    pages = {117--127},
    title = {There are exactly five biplanes with $k=11$},
    volume = {16},
    year = {2008},
}