@article{Setiawan2011, 
     author = "Setiawan, Andry and Nakano, Shin-ichi", 
     doi = "10.1587/transfun.E94.A.1965", 
     issn = "09168508", 
     journal = "IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences", 
     keyword = "Enumeration,Graph,St-orientation", 
     link = "https://www.jstage.jst.go.jp/article/transfun/E94.A/10/E94.A_10_1965/_article", 
     number = "10", 
     pages = "1965--1970", 
     title = "Listing all st-orientations", 
     uri = "https://www.jstage.jst.go.jp/article/transfun/E94.A/10/E94.A_10_1965/_article", 
     volume = "E94-A", 
     year = "2011", 
}

Problems: 174