TY - BOOK AU - Helms Lester, L AU - Helms Lester, L TI - Potential theory SN - 9781848823181 (pbk) U1 - B38, P9;2 TB PY - 2009/// CY - New York PB - Springer KW - Elliptte operators KW - Interpolation and monotonicity KW - Newtoniam potential KW - Potential theory KW - Mathematics N1 - Include bibliographical references 431-433p; Index 435-438p ER -