We regret to inform you that the publisher of this article, Böhlau Verlag, has removed this article from DeepDyve.

Occasionally, journals transition between publishers. This article might be available on DeepDyve through a different publisher:

Search DeepDyve for 10.7788/ha-2018-260103

Alternatively, you may find this article directly from the publisher, here: 10.7788/ha-2018-260103.