1. The Constitution of the Russian Federation (adopted by popular vote on 12.12.1993) (Russian Newspaper, 1993)
2. Civil Code of the Russian Federation (Russian Newspaper, Moscow, 2015)
3. Law of the Russian Federation of 21.02.1992 N 2395-1 (Russian Newspaper, 1993)
4. Federal Law “On the contract system in the field of procurement of goods, works, services for state and municipal needs" dated 05.04.2013 N 44-FZ (Russian Newspaper, Moscow, 2013)
5. Federal Law “On State Regulation in the Field of Coal Mining and Use, on Peculiarities of Social Protection of Coal Industry Organizations" dated June 20, 1996 N 81-FZ (Russian Newspaper, Moscow, 1996)