Irwin JM, Quinn SN, Berta ZK, Latham DW, Torres G, Burke CJ, Charbonneau D, Dittmann J, Esquerdo GA, Stefanik RP, et al. LSPM J1112+7626: Detection of a 41 Day M-dwarf Eclipsing Binary from the MEarth Transit Survey. \apj. 2011;742 (2) :123.