2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/34632We review the work going on in black-hole physics during the last ten years, called the Choptuik Phenomenon.20 pages, Plaintex, Talk given during the Research Semester on Gravitation and Cosmology, Feza Gursey Institute, Istanbul, Turkey,JUne -July 2003General Relativity and Quantum Cosmologytext