book edition published in 1919
book edition published in 1916
article in Otto's encyclopedia
book edition published in 1905
book edition published in 1925
book edition published in 1901
book edition published in 1924
book edition published in 1895
book edition published in 1912
book edition published in 1911
book edition published in 1896
book edition published in 1897
book edition published in 1912–1918