@article{gu2013variational,
  title={Variational principles for Minkowski type problems, discrete optimal transport, and discrete Monge-Ampere equations},
  author={Gu, Xianfeng and Luo, Feng and Sun, Jian and Yau, S-T},
  journal={Asian Journal of Mathematics (AJM)},
  volume={20},
  number={2},
  pages={383--398},
  month={April},
  year={2016}
}