M. Albert, R. J. Nowakowski, and &. Wolfe, Lessons in Play: An Introduction to Combinatorial Game Theory, 2007.

R. B. Austin, Impartial and Partizan Games, 1976.

E. R. Berlekamp, J. H. Conway, and &. R. Guy, Winning ways for your mathematical plays, vol.1, 2001.

I. Caines, C. Gates, R. K. Guy-&-r, and . Nowakowski, Periods in taking and partitioning games, Amer. Math. Monthly, vol.106, pp.359-361, 1999.

T. R. Dawson, Caissa's Wild Roses, Five Classics of Fairy Chess, 1935.

E. Duchêne and &. Rigo, Invariant games, Theoretical Computer Science, vol.411, pp.3169-3180, 2010.

A. Flammenkamp, Sprague-Grundy values of some octal games

J. P. Grossman, Searching for Periodicity in Officers, vol.70, 2019.

J. P. Grossman-&-r and . Nowakowski, A ruler regularity in hexadecimal games, 2013.

P. M. Grundy, Mathematics and games, Eureka, vol.2, pp.6-9, 1939.

R. K. Guy and C. A. Smith, The G-values of various games, Proc. Camb. Phil. Soc, vol.52, pp.512-526, 1956.

D. G. Horrocks-&-r and . Nowakowski, Regularity in the G-sequences of octal games with a pass, INTEGERS, vol.3, p.1, 2003.

S. J. Howse-&-r and . Nowakowski, Periodicity and arithmetic-periodicity in hexadecimal games, Theoretical Computer Science, vol.313, pp.463-472, 2004.

R. J. Nowakowski, Unsolved problems in combinatorial games, vol.70, 2019.

A. N. Siegel, Combinatorial Game Theory, 2013.

R. P. Sprague, Über mathematische Kampfspiele, Tôhoku Math. J, vol.41, p.290