characters in discoverer names are preserved in comet names, like 32P/Comas Solà, 6P/d'Arrest, 53P/Van Biesbroeck, Comet van den Bergh (1974g), 66P/du Toit, or
Radionuclide Metrology and its Applications. 134: 6–12. Bibcode:2018AppRI.134....6P. doi:10.1016/j.apradiso.2017.09.002. PMID 28947247. Emery, G T (1972). "Perturbation