RETRACTED: Exact controllability of partial integrodifferential equations with mixed boundary conditions

This article has been retracted at the request of the Editors-in-Chief. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).Reason: The article has been retracted at the request of the Editors-in-Chief as well as several readers. Theorem 2.1 therein is wrong and the authors could not fix the mistakes. This leads to the incorrect conclusions in the paper.