... Griffiths H., Ground Penetrating Radar - 2nd Edition, MPG Books Limited, Bodmin, Cornwall, UK, 2004 Vu Duc Minh, Nguyen Ba Duan, 2007, Application of methods of Ground Penetrating Radar and of Multi-electrode ... Reflex software (for the Ground Penetrating Radar method) Also, it shows results study of selecting the optimal measuring array from different measuring arrays of the Multi-electrode Resistivity ... Wenner v phng phỏp Ra a t hon ton cú hiu qu i vi vic tỡm kim, phỏt hin cỏc i tng vựng thm thõn l cỏc va ngang v cú th xỏc nh c ranh gii trờn v di ca va ngang ú bng phng phỏp Ra a t Ti liu tham...