The impact of environmental regulations on regional development in Eastern EstoniaPrause, Gunnar Klaus; Olaniyi, Eunice OmololaNew Challenges of Economic and Business Development - 2017 : Digital Economy : International Scientific Conference : proceedings : May 18-20, 2017, Riga, University of Latvia2017 / p. 461-472 : ill https://www.bvef.lu.lv/fileadmin/user_upload/lu_portal/projekti/evf_conf2017/Proceedings.pdf

The impact of environmental regulations on regional development in Eastern EstoniaPrause, Gunnar Klaus; Olaniyi, Eunice OmololaNew Challenges of Economic and Business Development : International Scientific Conference : abstracts of reports : May 18-20, 2017, Riga, University of Latvia2017 / p. 160 https://www.bvef.lu.lv/fileadmin/user_upload/lu_portal/projekti/evf_conf2017/Abstracts.pdf