BlutMarch 1968, Volume 16, Issue 6, pp 378–379 | Cite asReferateAuthorsAuthors and affiliationsF. BackH. G. ArltArticleThis is a preview of subscription content, log in to check access.Copyright information© J. F. Lehmanns Verlag 1968Authors and AffiliationsF. Back1H. G. Arlt21.München2.Bad Wiessee