HOJDIK, Vladimír. Waste Management Industry in the Environment of Slovak Economy. In Circular Economy in the Context of Social Requirements and Market Constraints I. : Proceedings of Scientific Papers. - České Budějovice : Vysoká škola evropských a regionálních studií, 2023. ISBN 978-80-7556-139-8, pp. 48-53. VEGA 1/0462/23 50%, VEGA 1/0582/22 50%.