2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/98105We study effects of nonmagnetic impurities on the competition between the superconducting and electron-hole pairing. We show that disorder can result in coexistence of these two types of ordering in a uniform state, even when in clean materials they are mutually exclusive.11 pages, 6 eps figures; added affiliation; published versionDisordered Systems and Neural NetworksSuperconductivitytext