On approximating submanifolds by algebraic sets and a solution to the Nash conjecture. S. Akbulut, H. King (1992) Inventiones mathematicae
On global Nash functions Jesús M. Ruiz, Masahiro Shiota (1994) Annales scientifiques de l'École Normale Supérieure
On the Kuratowski convergence of analytic sets Maciej P. Denkowski, Rafał Pierzchała (2008) Annales Polonici Mathematici We discuss some conditions which guarantee that the Kuratowski limit of a sequence of analytic sets is a Nash set.
On the pythagoras numbers of real analytic surfaces Francesca Acquistapace, Fabrizio Broglia, José F. Fernando, Jesús M. Ruiz (2005) Annales scientifiques de l'École Normale Supérieure
On the relative Nash approximation of analytic maps. Alberto Tancredi, Alberto Tognoli (1998) Revista Matemática Complutense