Published in Stuttgarter Beiträge Naturkunde, in 1967, in volume 171, pages 1-22

Published in Stuttgarter Beitraege zur Naturkunde, in 1967, in volume 173, pages 1-11

Published in Stuttgarter Beitraege Zur Naturkunde, in 1967, in volume 174, pages 1-51

Published in Stuttgarter Beitraege Zur Naturkunde, in 1967, in volume 175, pages 1-27

Published in Stuttgarter Beitraege zur Naturkunde, in 1967, in volume 176, pages 1-14

Published in Stuttgarter Beitraege Zur Naturkunde, in 1967, in volume 177, pages 1-28

Published in Stuttgarter Beitraege Zur Naturkunde, in 1967, in volume 178, pages 1-2

Published in Stuttgarter Beitraege Zur Naturkunde, in 1967, in volume 179, pages 1-16