{{Cite conference| publisher = Taylor & Francis| volume = 10| pages = 387–389| last1 = Alfonsi| first1 = P.| last2 = Fouché| first2 = O.| last3 = Bourgeois| first3 = E.| title = Numerical study of fracture openings by tunnelling in fractured rock mass| booktitle = Int. Symp. NUMOG X, Numerical Models in Geomechanics| location = Rhodes, Greece| date = 2007-04}}