Chen, H., Zhou, H., Zhang, Q., Xia, M., & Li, Q. (2016). A k-space operator-based least-squares staggered-grid finite-difference method for modeling scalar wave propagation. Geophysics, 81(2), T45. https://doi.org/10.1190/geo2015-0090.1

Chen, Hanming, Hui Zhou, Qingchen Zhang, Muming Xia, and Qingqing Li. "A K-space Operator-based Least-squares Staggered-grid Finite-difference Method for Modeling Scalar Wave Propagation." Geophysics 81, no. 2 (2016): T45. https://doi.org/10.1190/geo2015-0090.1.

Chen, Hanming, et al. "A K-space Operator-based Least-squares Staggered-grid Finite-difference Method for Modeling Scalar Wave Propagation." Geophysics, vol. 81, no. 2, 2016, p. T45, https://doi.org/10.1190/geo2015-0090.1.