@article{AM2_1974__11_136464,
     author = {N.S. Mendelsohn and S.H.Y. Hung},
     title = {Handcuffed {Designs.}},
     journal = {Aequationes mathematicae},
     pages = {256--266},
     publisher = {mathdoc},
     volume = {11},
     year = {1974},
     url = {http://geodesic.mathdoc.fr/item/AM2_1974__11_136464/}
}