@article{Ruskey1977, 
     author = "Ruskey, F. and Hu, T. C.", 
     doi = "10.1137/0206055", 
     issn = "0097-5397", 
     journal = "SIAM Journal on Computing", 
     keyword = "binary tree,feasible sequence,ranking algorithm", 
     language = "en", 
     link = "http://epubs.siam.org/doi/abs/10.1137/0206055", 
     month = "dec", 
     number = "4", 
     pages = "745--758", 
     publisher = "Society for Industrial and Applied Mathematics", 
     title = "Generating Binary Trees Lexicographically", 
     uri = "http://epubs.siam.org/doi/abs/10.1137/0206055", 
     volume = "6", 
     year = "1977", 
}

Problems: 388