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Detection of tunnels and boulders using shallow SH-SH reflected seismic waves
; Pugin, A J -M; Brewer, K; Cartwright, T;
Sargent, S L. The Leading Edge vol. 38, no. 6, 2019 p. 436-441, https://doi.org/10.1190/tle38060436.1
(NRCan Cont.# 20180347)