[836] Some problems of diophantine approximation

[837] Pluricomplex Green and Lempert functions for equally weighted poles

[838] The valuation theory of meromorphic function fields over open Riemann surfaces

[839] Normal forms for real surfaces in C^{2}near complex tangents and hyperbolic surface transformations

[840] On the rational approximations to the powers of an algebraic number: Solution of two problems of Mahler and Mendès France