연구논문  석사학위논문 　 Ergodic theorems for the nonlinear Volterra Integral equations in  Hilbert space(1983)  박사학위논문 　 Error estimates for solutions of second order hyperbolic differential equations by Galerkin method(1992)  국제학술지 ㆍ-estimates of quasi-optimal order for Galerkin methods to N dimensional second order hyperbolic differential equations Mathematica Japonica Vol 38 No.4 757-762 (1992) ㆍ -estimates of optimal order for Galerkin methods to N=2,3 dimensional second order hyperbolic differential equations J.K.M.S Vol 29 No. 2 225-238 (1992) ㆍ -estimates of optimal order for Galerkin methods to N dimensional second order hyperbolic differential equations ZAMM(Zeitscrift fuer Angawante Mathematik und Mechanik)(SCI Journal) Vol 73 No. 9 223-228 (1993) ㆍ -estimates of quasi-optimal order for Galerkin methods to N=2,3 dimensional second order hyperbolic differential equations JMAA(Journal of Mathematical Analysis and Applications)(SCI Journal) Vol 182 No. 1 287-292 (1994) ㆍ -estimates of optimal orders for Galerkin methods to one dimensional Stefan problems JMAA(SCI Journal) Vol 199 No. 1 231-242 (1996) ㆍ -estimates of optimal orders for Galerkin methods to one dimensional  Stefan problems  Communications in Applied Mathematics  Vol. 1 No. 4 503-510 (1997) ㆍ Error estimates of optimal orders for one dimensional Stefan problems Proceedings of the eighth International colloquium on Differential equations, 341-346 (1997) ㆍ Finite element Galerkin approximations of the Rosenau equation  Proceedings of the international conference on nonlinear functional analysis and applications, Vol 2, 153-160 (1997)  ㆍ The variational problems and equivalent forms for a second order elliptic boundary value problem JMAA(SCI Journal) vol. 234, no.1 246-264 (1999) ㆍ Fully discrete Galerkin approximations for a single-phase nonlinear Stefan problem in one space dimension with Neumann boundary conditions International Journal of Applied Mathematics, Vol.1 No.2 143-169 (1999) ㆍ The variational problems for a second order elliptic boundary value problem Differential Equations and Applications(Proceeding) by the Nova Science Publisher, Inc. New York, USA, 215-223 (2000) ㆍ Error estimates for the solution of second order elliptic boundary value problem and its first derivatives by Ritz method IJAM Vol. 4, No. 2, 189-199 (2000) ㆍ A priori error-estimates for a unidimensional single-phase nonlinear Stefan problem with Neumann boundary conditions in one space dimension IJAM Vol.1, No.4, 411-427 (2000) ㆍ Error estimates for the solution of second order elliptic boundary value problem and its first derivatives by Ritz method in two dimensions IJAM Vol.7, No.1, 17-30 (2001) ㆍ About the solutions of variational problems for a second order elliptic boundary value problem International Journal of Computational Analysis and Applications(2001) ㆍ Fully discrete approximation for a quasi-linear Stefan problem with forcing term  Applied Mathematics and Computation(SCI Journal) (2001) ㆍ Error estimates for fullydiscrete approximation to a free boundary problem in polymer technology Applied Mathematics and Computation(SCI Journal) (2002)  국내학술지 ㆍ Existence of solution of finite system of ordinary differential equations  Bulletin of Korean Mathematical Society, Vol 31 No. 2, 309-318 (1994) ㆍ A Finite element Galerkin method for a single phase nonlinear Stefan problem in one space dimension Proceeding on '97 Workshop on Mathematical Analysis and Applications 95-102 (1997) ㆍ A finite difference approximation of a singular nonlinear boundary value problem  Proceeding on '97 Workshop on Mathematical Analysis and Applications 85-94 (1997) ㆍ Error estimates for a single-phase nonlinear Stefan problem in one space dimension JKMS Vol. 34, No. 3, 661-672 (1997)  ㆍ A Finite difference approximation of a singular boundary value problem Bulletin of korean math Vol.35, No.3 473-484 (1998) ㆍ The Convergence of fully discrete Galerkin approximations of the Rosenau equation Korean Society for Computational and applied mathematics, Vol. 6, No.1, 1-13 (1999) ㆍ Fully discrete Galerkin method for unidimensional nonlinear single-phase Stefan problem in one space dimensions with Neumann boundary conditions Journal of the KSIM Vol.3, No.1 55-69 (1999) ㆍA finite element approximation of a fourth-order nonlinear boundary value problem Korean Journal of Computational and Applied Mathematics  Vol.8 No.3 935-942 (2001)  대학논문집 및 기타 논문 ㆍ Ergodic theorems for the nonlinear Volterra Integral equations in Hilbert space 석사논문 1-23 (1983) ㆍ Error estimates for solutions of second order hyperbolic differential equations by Galerkin method 박사학위 논문 1-67 (1992) ㆍ Uniqueness of solution of finite system of ordinary differential equations DSU Vol 1 7-15 (1995)  ㆍ Existence and Uniquenass of Volterra Integral Equations  DSU 13-22 (1996)  ㆍ Stability of Stochastic programs with fixed Rocours problem 동서논문집 23-30 (1996) ㆍ Ergodic theorems for maximal monotone operarors of nonlinear Volterra Integral equations in Hilbert spaces 동서논문집 45-60 (1997) ㆍ A finite element Galerkin method for a single-phase nonlinear Stefan problem with Neumann boundary conditions in one space dimension 동서논문집 제 4집 67-80 (1998) ㆍ Ergodic theorems for closed monotone operators of nonlinear Volterra integral equations in Hilbert spaces 동서대 논문집 5호 187-194 (1999) ㆍ Construction of approximating solutions of free boundary problems for nonlinear parabolic equations with nonlinear free boundary conditions DSU Vol 6 (2000) ㆍ L_2 and L_infty error estimates for a single phase linear Stefan problem with forcing term DSU 연구소 논문집 Vol 4 133-142 (2001) ㆍ Uniform estimates for approximating solutions of free boundary problems for nonlinear parabolic equations with nonlinear free boundary conditions DSU 논문집 Vol.7 (2001)