@article{Yamanaka2014, 
     author = "Yamanaka, Katsuhisa and Nakano, Shin-ichi", 
     doi = "10.1587/transfun.E97.A.1163", 
     issn = "0916-8508", 
     journal = "IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences", 
     link = "http://jlc.jst.go.jp/DN/JST.JSTAGE/transfun/E97.A.1163?lang=en\&from=CrossRef\&type=abstract", 
     number = "6", 
     pages = "1163--1170", 
     title = "Efficient Enumeration of All Ladder Lotteries with k Bars", 
     uri = "http://jlc.jst.go.jp/DN/JST.JSTAGE/transfun/E97.A.1163?lang=en&from=CrossRef&type=abstract", 
     volume = "E97.A", 
     year = "2014", 
}

Problems: 169