1. Al–Baali, M., and Fletcher, R., 1985, Variational method for non–linear least square: Journal of the Operational Research Society, 36(5), 405–421.
2. Cheng, J. L., Li, M. X., Xiao, Y. L., et al., 2014, Study on particle swarm optimization inversion of mine transient electromagnetic method in whole–space: Chinese J. Geophys. (in Chinese), 57(10), 3478–3484.
3. Constable, S. C., Parker, R. L., and Constalbe, C. G., 1987, Occam’s inversion: A practical algorithm for generating smooth models from electromagnetic sounding data: Geophysics, 52(3), 289–300.
4. Fan, T., Li, W. G., Wang, P., et al., 2013, Research on fine interpretation for water containment of coal mine rock strata by MT imitated TEM depth inversion method: Journal of China Coal Society (in Chinese), 38(sup1.), 129–135.
5. Golub, G., and Pereyra, V., 2003, Separable nonlinear least squares: The variable projection method and its applications: Inverse Problems, 19(2), R1–R26.