BibTeX
@ARTICLE{
         Yannakakis1981CtM,
       ad_theotech = "Sparsity",
       author = "Mihalis Yannakakis",
       title = "{C}omputing the Minimum Fill-in is {NP}-complete",
       journal = "{SIAM} Journal on Discrete Mathematics",
       volume = "2",
       year = "1981",
       pages = "77--79",
       number = "1"
}