TY - HEAR T1 - Determining when Multiple Respondents are needed in Supply Chain Research: The Case of Purchasing and Operations Y1 - 2004 A1 - Pagell,Mark A1 - Krause,D. KW - Management JA - North American Research Symposium on Purchasing and Supply Management CY - Tempe U2 - c U4 - 2445015041 ID - 2445015041 ER -