SCHÖDEL, Christian. Sustainability in SMEs and Missing Economic Focus. In Sustainable Behaviour of Economics Entities : Proceedings of Scientific Papers. - Bratislava : Vydavateľstvo EKONÓM, 2023. ISBN 978-80-225-5072-7, pp. 106-113. VEGA 1/0836/21 (50 %), KEGA 019EU 4/2022 (50 %).