Sinicakova, Marianna (2012). ENVIRONMENTAL PROTECTION EXPENDITURES IN THE EUROPEAN UNION: THE CASE OF THE VISEGRAD COUNTRIES. SGEM International Multidisciplinary Scientific GeoConference EXPO Proceedings; SGEM2012 12th International Multidisciplinary Scientific GeoConference, 957 - 964 pp. https://doi.org/10.5593/sgem2012/s22.v4017