Franciszek PLEWA; Grzegorz STROZIK. Emphasizing the Importance of Hard Coal in Electricity Generation in Poland. Recent Developments in Engineering Research Vol. 12, [S. l.], p. 75–96, 2021. DOI: 10.9734/bpi/rder/v12/7303D. Disponível em: https://stm.bookpi.org/RDER-V12/article/view/1483. Acesso em: 13 jun. 2026.