@inproceedings{Liu:20142q, author = "Liu, Keh-Fei and Chen, Ying and Gong, Ming and Sufian, Raza and Sun, Mingyang and Li, Anyi", title = "{The Roper Puzzle}", doi = "10.22323/1.187.0507", booktitle = "Proceedings of 31st International Symposium on Lattice Field Theory LATTICE 2013 {\textemdash} PoS(LATTICE 2013)", year = 2014, volume = "187", pages = "507" }