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Alawode, O. , Bamiduro, T. , Eludire, A.. "Some (v + 1, b + r + λ + 1, r + λ + 1, k, λ + 1) Balanced Incomplete Block Designs (BIBDs) from Lotto Designs (LDs)". World Academy of Science, Engineering and Technology, Open Science Index 68, International Journal of Mathematical and Computational Sciences, (2012), 6(8), 1194 - 1197.