Herbert Stahl (1942-2013)
at Mathematics Genealogy Project.
Herbert R. Stahl
at MathSciNet (for those with access).
Aptekarev, A., P. Nevai and V. Totik,
In memoriam: Herbert Stahl August 3, 1942ľApril 22, 2013,
J. Approx. Theory
(2014), A1-A26. For those with access, this article may be viewed at