1. Bakulin A, Calvert R (2004) “Virtual source: new method for imaging and 4D below complex overburden”. In: 74th Ann. Internat. Mtg. Soc. of Expl. Geophys, pp 2477–2480
2. Korneev V, Bakulin A, Lopez J (2008) Lawrence Barkeley National Laboratory, and Shell International Exploration and Production Inc., “Imaging and monitoring with virtual sources on a synthetic 3D data set from the Middle East”. In: 78th Annual Meeting, SEG Expanded Abstracts, pp 3204–3208
3. Akram J, Eaton D (2014). In: 76th EAGE Conference and Exhibition, p 2014
4. Al-Shuhail A, Kaka SI, Jervis M (2013) Enhancement of passive microseismic events using seismic interferometry. Seismol Res Lett 84(5):781–784
5. Nicolson HJ (2011) “Exploring the Earth’s subsurface with virtual seismic sources and receivers” The University of Edinburgh