@article{10_37236_878,
     author = {Ralucca Gera and Jian Shen},
     title = {Extension of strongly regular graphs},
     journal = {The electronic journal of combinatorics},
     year = {2008},
     volume = {15},
     doi = {10.37236/878},
     zbl = {1158.05342},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/878/}
}