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BULLETIN of the Volume 82 February 2018 INSTITUTE of COMBINATORICS and its APPLICATIONS
(Boca Raton, FL, U.S.A., 2018-02)
We define a 3-GDD(n, 2, k, λ1, λ2) by extending the definitions of a group
divisible design and a t-design and give some necessary conditions for its
existence. We prove that these necessary conditions are sufficient for ...