[1]
Piwowarczyk, R. 2012. Orobanche bohemica Čelak. (Orobanchaceae) at the eastern limit of its geographical range: new data on its distribution in Poland. Biodiversity: Research and Conservation. 26, (Nov. 2012), 53–59. DOI:https://doi.org/10.2478/v10119-012-0001-x.