0104-4036 0104-4036 S0104-40362019000300589 10.1590/s0104-40362019002701807 Russia 00 07 2019 00 07 2019 27 104 589 609

2013 16 1 1 255-80 2016 43 2 2 81-102 2017 1-25 2012 28 2 2 273-82 2008 2008 2017 125 1 1 37-56 2006 7 4 4 345-9 2015 22 4 4 45-56 1995 2008 RUSSIA 2014 RUSSIA Ministry of Education and Science 2018 RUSSIA Ministry of Education and Science 2013 RUSSIA Ministry of Education and Science 2013 2015 191 2 2 2605-8 1997 TATARSTAN Ministry of Education and Science 2015 TATARSTAN Ministry of Education and Science 2017 2015 171 472-81 2018 26 100 100 968-84