Kovin, V.S., and R.I. Petrova. “Competitiveness in the Local Political Space: Electoral Competitions for the Heads of LSGS and the Elections of Deputies of Representative Authorities in Municipal Districts and Urban Districts of Perm Region in 2012-2017”. Perm Federal Research Centre Journal, no. 4, July 2018, pp. 112-20, https://doi.org/10.7242/1998-2097/2017.4.17.