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Krisciunas, Kevin, Li, Weidong, Matheson, Thomas, Howell, D Andrew, Stritzinger, Maximilian, Aldering, Greg, Berlind, Perry L, Calkins, M, Challis, Peter, Chornock, Ryan, Conley, Alexander, Filippenko, Alexei V, Ganeshalingam, Mohan, Germany, Lisa, Gonzalez, Sergio, Gooding, Samuel D, Hsiao, Eric, Kasen, Daniel, Kirshner, Robert P, Marion, G. H. Howie, Muena, Cesar, Nugent, Peter E, Phelps, M, Phillips, Mark M, Qiu, Yulei, Quimby, Robert, Rines, K, Silverman, Jeffrey M, Suntzeff, Nicholas B, Thomas, Rollin C and Wang, Lifan (2011) The Most Slowly Declining Type Ia Supernova 2011ay. The Astronomical Journal, 142 (3). ISSN 0004-6256 (print) 1538-3881 (online)