book by František Krupička
work by J. A. MacCulloch (Celtic) and Jan Máchal (Slavic)
1918 edition of the work by J. A. MacCulloch and Jan Máchal
article in Otto's encyclopedia
book edition published in 1907
book edition published in 2019
book edition published in 1902
book edition published in 1911
book edition published in 1908
book edition published in 1919