@article{Johnson1988, 
     author = "Johnson, David S. and Yannakakis, Mihalis and Papadimitriou, Christos H.", 
     doi = "10.1016/0020-0190(88)90065-8", 
     issn = "00200190", 
     journal = "Information Processing Letters", 
     link = "http://www.sciencedirect.com/science/article/pii/0020019088900658 http://linkinghub.elsevier.com/retrieve/pii/0020019088900658", 
     month = "mar", 
     number = "3", 
     pages = "119--123", 
     title = "On generating all maximal independent sets", 
     uri = "http://www.sciencedirect.com/science/article/pii/0020019088900658", 
     volume = "27", 
     year = "1988", 
}

Problems: 29