\documentclass[a3paper]{article}
\usepackage{epsf,psfig,pstricks,multicol,pst-grad,pst-node,color}
\usepackage{graphicx,amsmath,amssymb,layout}
\documentclass[a3paper]{article}
\usepackage{epsf,psfig,pstricks,multicol,pst-grad,pst-node,color}
\usepackage{graphicx,amsmath,amssymb,layout}