CHAMBEGA, D.J.; LUJARA, N.K. Derivation of an Expression That Defines the Pulling Forces in Relays with Small Operating Gaps. Tanzania Journal of Engineering and Technology, [S. l.], v. 25, n. 2, p. 1–5, 2002. DOI: 10.52339/tjet.v25i2.320. Disponível em: https://tjet.udsm.ac.tz/index.php/tjet/article/view/320. Acesso em: 18 dec. 2025.