Optimisation of the economic, environmental and administrative efficiency of the municipal waste management model in rural areasPõldnurk, JanaResources, conservation and recycling2015 / p. 55-65 : ill The reorganisation of waste management in Harju county municipalities through a waste management cooperation and competence centre. A socio-economical feasibility studyPõldnurk, JanaEuropean scientific journal2014 / p. 382-399 : ill