[1] Wageningen Univ & Res, Agr Econ & Rural Policy Grp, NL-6706 KN Wageningen, Netherlands
[2] Stavropol State Agr Univ, Foreign Languages Dept, Stavropol 355017, Russia
[3] Czech Univ Life Sci, Dept Econ, Prague 16500, Czech Republic
[4] Wageningen Univ & Res, Urban Econ Grp, NL-6706 KN Wageningen, Netherlands
[5] Stavropol State Agr Univ, Econ Fac, Dept Econ Theory & Appl Econ, Stavropol 355017, Russia