Linked from
The 7 pages that link to Carl Auer von Welsbach, each with the reason it gives.
NeodymiumRelated: His chemical separation established neodymium as a distinct element.
Gas mantleRelated: His experiments with rare-earth oxides produced the practical mantle design.
LutetiumRelated: His independent discovery led to a priority dispute with Urbain.
PraseodymiumRelated: His chemical separation established praseodymium as a distinct element.