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by Colbourn, Charles J.; Rosa, Alex
by Colbourn; Charles J.
by Colbourn, Charles J.; Jungnickel, D.; Rosa, A.
by Colbourn, Charles J.
by Colbourn, Charles J.; Grossi, Roberto; Pisanti, Nadia
by Charles J. Colbourn
by Colbourn, Charles J.; Mahmoodian, Ebdollah Sayed