1. A Note on the Harmonic Extension Approach to Fractional Powers of non‐densely defined Operators. Issue 1 (8th October 2019) Authors: Meichsner, Jan; Seifert, Christian Other Names: Eberhardsteiner J. guestEditor.; Schöberl M. guestEditor. Journal: Proceedings in applied mathematics and mechanics Issue: Volume 19:Issue 1(2019) Page Start: n/a Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗