Robust determination of optical path difference: fringe tracking at the infrared optical telescope array interferometer - Pedretti, Ettore; Traub, Wesley A; Monnier, John D; Millan-Gabet, Rafael; Carleton, Nathaniel P; Schloerb, F Peter; Brewer, Michael K; Berger, Jean-Philippe; Lacasse, Marc G; Ragland, Sam (Applied optics (2004), 2005)