A method for efficiently estimating non-Gaussianity of continuous-variable quantum statesShao-Hua Xiang, Yu-Jing Zhao, Cheng Xiang, Wei Wen and Xue-Wen LongEur. Phys. J. D, 74 1 (2020) 16DOI: https://doi.org/10.1140/epjd/e2019-100421-6