@article{Johnson1975, 
     author = "Johnson, Donald B.", 
     doi = "10.1137/0204007", 
     issn = "0097-5397", 
     journal = "SIAM Journal on Computing", 
     keyword = "1,algorithm,broadly speaking,circuit,cycle,digraph,enumeration,every,graph,introduction,is determining how many,is the construction of,objects,problems on,set,sets of objects,the one,the other,there are in the,there are two enumeration,which we call counting,which we call finding", 
     link = "http://epubs.siam.org/doi/abs/10.1137/0204007", 
     month = "mar", 
     number = "1", 
     pages = "77--84", 
     title = "Finding All the Elementary Circuits of a Directed Graph", 
     uri = "http://epubs.siam.org/doi/abs/10.1137/0204007", 
     volume = "4", 
     year = "1975", 
}

Problems: 7