Bank, R. E. (1990). PLTMG: A software package for solving elliptic partial differential equations : users' guide 6.0. Society for Industrial and Applied Mathematics. SIAM.
Chicago Style (17th ed.) CitationBank, Randolph E. PLTMG: A Software Package for Solving Elliptic Partial Differential Equations : Users' Guide 6.0. Philadelphia: Society for Industrial and Applied Mathematics. SIAM, 1990.
MLA (9th ed.) CitationBank, Randolph E. PLTMG: A Software Package for Solving Elliptic Partial Differential Equations : Users' Guide 6.0. Society for Industrial and Applied Mathematics. SIAM, 1990.