TY - BOOK AU - Langlands, Robert P., AU - Ramakrishnan,Dinakar TI - The Zeta functions of picard modular surfaces SN - 2921120089 AV - QA571 Z47 PY - 1992/// CY - Montreal PB - CRM KW - Grupos de Picard KW - Superficies algebraicas KW - Funciones zeta KW - Superficies modulares de Hilbert N1 - "Based on lectures delivered at CMR workshop in the Spring of 1988" ER -