“Continuous and Discrete Adjoint Approach Based on Lattice Boltzmann Method in Aerodynamic Optimization Part I: Mathematical Derivation of Adjoint Lattice Boltzmann Equations”, Adv. Appl. Math. Mech., vol. 6, no. 5, pp. 570–589, June 2014, doi: 10.4208/aamm.2013.m226.