1. Pure and Applied Mathematics, Vol. 20;Borevich, A. I.,1966
2. Hilbert’s tenth problem is unsolvable;Davis, Martin;Amer. Math. Monthly,1973
3. Hilbert’s tenth problem: Diophantine equations: positive aspects of a negative solution;Davis, Martin,1976
4. Hilbert’s tenth problem for quadratic rings;Denef, J.;Proc. Amer. Math. Soc.,1975
5. \bysame, Diophantische verzamelingen over ringen van algebraische gehelen, Thesis, Leuven, 1976.