Tristan van Leeuwen, Aleksandr Y. Aravkin, and Felix J. Herrmann,
“Comment on: “Application of the variable projection scheme for frequency-domain full-waveform inversion” (M. Li, J. Rickett, and A. Abubakar, Geophysics, 78, no. 6, R249–R257)”,
Geophysics, vol. 79, pp. X11-X17, 2014.