@article{Chegireddy1987, 
     author = "Chegireddy, Chandra R. and Hamacher, Horst W.", 
     doi = "10.1016/0166-218X(87)90017-5", 
     issn = "0166218X", 
     journal = "Discrete Applied Mathematics", 
     link = "http://linkinghub.elsevier.com/retrieve/pii/0166218X87900175", 
     number = "2", 
     pages = "155--165", 
     title = "Algorithms for finding K-best perfect matchings", 
     uri = "http://linkinghub.elsevier.com/retrieve/pii/0166218X87900175", 
     volume = "18", 
     year = "1987", 
}

Problems: 57