Hubert A. Berens (1936-2015)

Hubert Berens at the Mathematics Genealogy Project.

Hubert Berens at Wikipedia (in German).

Hubert Berens at MathSciNet (for those with access).

Xu, Y., In Memoriam: Hubert A. Berens (1936-2015) , J. Approx. Theory 198 (2015), iv-xxix. For those with access, this article may be viewed at Science Direct.