Translation of "Sometimes referred to as" in German

The series of cataclysms is sometimes referred to as "3.11."
Diese Abfolge von Katastrophen wird teilweise auch als "3.11." bezeichnet.
GlobalVoices v2018q4
The Sutter Buttes are sometimes referred to as the world's smallest mountain range.
Die "Sutter Buttes" gelten als kleinstes Gebirgsmassiv der Welt.
Wikipedia v1.0

Related phrases

references for there is no reference to sometime refer
for reference sometimes referred to as the sometimes refer about
refer to him for a reference