Ejdys, Joanna, and Alina Matuszak-Flejszman. “New Management Systems As an Instrument of Implementation Sustainable Development Concept at Organizational Level”. Technological and Economic Development of Economy 16, no. 2 (June 30, 2010): 202-218. Accessed December 2, 2024. https://aviation.vgtu.lt/index.php/TEDE/article/view/5860.