@inproceedings{Ono2005, 
     address = "L{\"{u}}beck, Germany", 
     author = "Ono, Akimitsu and Nakano, Shin-ichi", 
     booktitle = "FCT 2005: the 15th International Symposium on Fundamentals of Computation Theory", 
     doi = "10.1007/11537311_39", 
     editor = "Li\'{s}kiewicz, Maciej and Reischuk, R\"{u}diger", 
     isbn = "978-3-540-28193-1", 
     link = "http://link.springer.com/chapter/10.1007/11537311_39", 
     month = "aug", 
     pages = "445--453", 
     publisher = "Springer Berlin Heidelberg", 
     series = "Lecture Notes in Computer Science", 
     title = "Constant Time Generation of Linear Extensions", 
     uri = "http://link.springer.com/chapter/10.1007/11537311_39", 
     volume = "3623", 
     year = "2005", 
}

Problems: 39