@article{Cattell2000, 
     author = "Cattell, Kevin and Ruskey, Frank and Sawada, Joe and Serra, Micaela and Miers, C.Robert", 
     doi = "10.1006/jagm.2000.1108", 
     issn = "01966774", 
     journal = "Journal of Algorithms", 
     link = "http://linkinghub.elsevier.com/retrieve/pii/S0196677400911088 http://www.sciencedirect.com/science/article/pii/S0196677400911088", 
     month = "nov", 
     number = "2", 
     pages = "267--282", 
     title = "Fast Algorithms to Generate Necklaces, Unlabeled Necklaces, and Irreducible Polynomials Over GF(2)", 
     uri = "http://linkinghub.elsevier.com/retrieve/pii/S0196677400911088", 
     volume = "37", 
     year = "2000", 
}

Problems: 303