@article{Koda1993, 
     author = "Koda, Y. and Ruskey, F.", 
     doi = "10.1006/jagm.1993.1044", 
     issn = "01966774", 
     journal = "Journal of Algorithms", 
     link = "http://www.sciencedirect.com/science/article/pii/S0196677483710448 http://linkinghub.elsevier.com/retrieve/pii/S0196677483710448", 
     month = "sep", 
     number = "2", 
     pages = "324--340", 
     title = "A Gray Code for the Ideals of a Forest Poset", 
     uri = "http://www.sciencedirect.com/science/article/pii/S0196677483710448", 
     volume = "15", 
     year = "1993", 
}

Problems: 341