Piwowarczyk, Renata. “Revised Distribution and Plant Communities of Orobanche Alsatica and Notes on the Orobanchaceae Series Alsaticae in Poland”. Biodiversity: Research and Conservation 26 (November 30, 2012): 39–51. Accessed March 18, 2026. https://pressto.amu.edu.pl/index.php/biorc/article/view/v10119-012-0008-3.