Lange S. Seroepideutical study of the destiction of leptosperes of sejroe group in Battle group of middle Thuringia Berl Munch Tierarzt Wochenschr 1992; 105: 374-377.
Lange S. Seroepidemiological studies of the detection of leptospires of the sejroe group in cattle in middle Thuringia. Berl Munch Tierarzt Wochenschr. 1992; 105: 374–377.