Harm Derksen, Gregor Kemper. (2002), Derkson, Harm; Kemper, Gregor (eds.), Computational Invariant Theory, Invariant theory and algebraic transformation groups, Springer-Verlag, էջ 49, ISBN3540434763, OCLC49493513.
edited by A.N. Kolmogorov, A.P. Yushkevich ; translated from the Russian by A. Shenitzer, H. Grant and O.B. Sheinin. (2001), Kolmogorov, A. N.; Yushkevich, A. P. (eds.), Mathematics of the 19th Century: Mathematical Logic, Algebra, Number Theory, Probability Theory, Springer-Verlag, էջ 85, ISBN3764364424, OCLC174767718{{citation}}: |author= has generic name (օգնություն)CS1 սպաս․ բազմաթիվ անուններ: authors list (link).
