Linked from
The 5 pages that link to Heinrich Rohrer, each with the reason it gives.
GluonCompared with: Not connected to gluon physics; excluded.
Ernst RuskaCompared with: Rohrer and Binnig received the same prize for work distinct from Ruska’s.
IBM ResearchRelated: His collaboration at IBM Zurich produced a landmark instrument for nanoscience.
Gerd BinnigRelated: Rohrer and Binnig developed the instrument together at IBM Zurich.