1. Ahmad, N.: The geometry of shape recognition via a Monge–Kantorovich optimal transport problem. PhD thesis, Brown University (2004)
2. Ahmad, N., Kim, H.K., McCann, R.J.: External doubly stochastic measures and optimal transportation (2009). Preprint at www.math.toronto.edu/mccann
3. Anderson E.J., Nash P.: Linear Programming in Infinite-Dimensional Spaces. Wiley, Chichester (1987)
4. Brenier Y.: The dual least action problem for an ideal, incompressible fluid. Arch Ration Mech Anal 122, 323–351 (1993)
5. Caffarelli, L.A., McCann, R.J.: Free boundaries in optimal transport and Monge-Ampère obstacle problems. Ann Math (2) to appear (2009)