@article{Johnston1976, 
     author = "Johnston, H. C.", 
     doi = "10.1007/BF00991836", 
     issn = "0091-7036", 
     journal = "International Journal of Computer \& Information Sciences", 
     keyword = "Cliques,combinatorial programming,graph theory,stepwise refinement,tree search", 
     link = "http://link.springer.com/10.1007/BF00991836", 
     month = "sep", 
     number = "3", 
     pages = "209--238", 
     title = "Cliques of a graph-variations on the Bron-Kerbosch algorithm", 
     uri = "http://link.springer.com/10.1007/BF00991836", 
     volume = "5", 
     year = "1976", 
}

Problems: 403