Letter of acknowledgement from DeGolyer and MacNaughton company
OJSC "RU-ENERGY GROUP" review
WGRR-2007 conference decision
National University of Oil and Gas "Gubkin University" testimonial
"BashGeoProject" Ltd. review
"Orenburggazprom" scientific council protocol
"VNIIGAZ" Ltd. expert conclusion
Detection of cracks on rail carts wheels testing protocol at Rybnoye station on 15.07.2004
Act of testing for thermovision diagnostics of cargo carts wheels pairs system in Ryazan city operational depot from 01.08.2006 till 07.08.2006
Contact wire wear testing act within Moscow-Kazanskaya - Sasovo area on 06.04.2009