@article{10_37236_1295,
     author = {Yair Caro and Raphael Yuster},
     title = {Efficient covering designs of the complete graph},
     journal = {The electronic journal of combinatorics},
     year = {1997},
     volume = {4},
     number = {1},
     doi = {10.37236/1295},
     zbl = {0885.05019},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1295/}
}