Hilbert's Problems see also Hilbert's Problems Anasov, D.V. and Bolibruch, A.A. The Riemann-Hilbert Problem. Braunschweig, Germany: Vieweg, 1994. $?. Browder, Felix E. (Ed.). Mathematical Developments Arising from Hilbert Problems. Providence, RI: Amer. Math. Soc., 1976. 628 p. $34. Denef, Jan; Lipshitz, Leonard; Pheidas, Thanases; and Van Geel, Jan (Eds.). Hilbert's Tenth Problem: Relatons with Arithmetic and Algebraic Geometry, Workshop on Hilbert's Tenth Problem: November 2-5, 1999, Ghent University, Belgium. Providence, RI: Amer. Math. Soc., 2000. 367 p. $?. Holzapfel, R.-P. The Ball and Some Hilbert Problems. Boston, MA: Birkhäuser, 1995. 160 p. $38.50. Ilyashenko, Yu. and Yakovenko, S. (Eds.). Concerning the Hilbert 16th Problem. Providence, RI: Amer. Math. Soc., 1995. 219 p. $95. Matijasevich, Yuri V. Hilbert's Tenth Problem. Cambridge, MA: MIT Press, 1993. 264 p. $45.