Signing in Four Public Software Package Registries: Quantity, Quality, and Influencing Factors. - Taylor R. Schorlemmer; Kelechi G. Kalu; Luke Chigges; Kyung Myung Ko; Eman Abdul-Muhd Abu Isghair; Saurabh Baghi; Santiago Torres-Arias; James C. Davis 001 (CoRR, 2024)