Bibtex of Graph / Vertex

@article{Dyer1977, 
     author = "Dyer, M. E. and Proll, L. G.", 
     doi = "10.1007/BF01593771", 
     issn = "0025-5610", 
     journal = "Mathematical Programming", 
     month = "dec", 
     number = "1", 
     pages = "81--96", 
     title = "An algorithm for determining all extreme points of a convex polytope", 
     volume = "12", 
     year = "1977", 
}