@article{10_4153_CJM_1992_063_x,
     author = {Rees, Rolf S. and Stinson, Douglas R.},
     title = {Frames with {Block} {Size} {Four}},
     journal = {Canadian journal of mathematics},
     pages = {1030--1049},
     year = {1992},
     volume = {44},
     number = {5},
     doi = {10.4153/CJM-1992-063-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1992-063-x/}
}