Choi, J.-Y., Shin, I.-G., Han, C., Udalski, A., Sumi, T., Gould, A., et al. (2012). A New Type of Ambiguity in the Planet and Binary Interpretations of Central Perturbations of High-magnification Gravitational Microlensing Events. Astrophysical Journal, 756: 48. doi:10.1088/0004-637X/756/1/48.