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Continue to ChatUlrich trichotomy on del Pezzo surfaces - https://avesis.metu.edu.tr/yayin/41cab424-3a09-4b6d-833e-fbfe37dda913/ulrich-trichotomy-on-del-pezzo-surfaces
Ulrich trichotomy on del Pezzo surfaces - https://avesis.metu.edu.tr/yayin/41cab424-3a09-4b6d-833e-fbfe37dda913/ulrich-trichotomy-on-del-pezzo-surfaces