Johnson, N. L. (2010). Combinatorics of spreads and parallelisms.
Čikaški stil citiranjaJohnson, Norman L. Combinatorics of Spreads and Parallelisms. CRC Press, New York, 2010.
MLA način citiranjaJohnson, Norman L. Combinatorics of Spreads and Parallelisms. 2010.
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