@article{10_37236_1534,
     author = {V C Mavron},
     title = {Frequency squares and affine designs},
     journal = {The electronic journal of combinatorics},
     year = {2000},
     volume = {7},
     doi = {10.37236/1534},
     zbl = {0961.05009},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1534/}
}