Photometric and Spectroscopic Studies of Massive Binaries in the Large Magellanic Cloud. I. Introduction and Orbits for Two Detached Systems: Evidence for a Mass Discrepancy? - Philip Massey; Nidia I. Morrell; Kathryn F. Neugent; Laura R. Penny; Kathleen-DeGioia Eastwood; Douglas R. Gies (The Astrophysical Journal, 2012)