1. Lessons in Play: An Introduction to Combinatorial Game Theory;Albert,2007
2. Impartial and Partizan Games;Austin,1976
3. Winning Ways for Your Mathematical Plays, Vol. 1;Berlekamp,2001
4. Periods in taking and partitioning games;Caines;Amer. Math. Monthly,1999
5. Caissa’s wild roses;Dawson,1935