K. V. R. SRINIVAS. Characterization of Ideal Semigroups of Inverse Semigroups. Characterisation of Semigroups and Rings, [S. l.], p. 8–14, 2023. DOI: 10.9734/bpi/mono/978-81-19491-82-7/CH2. Disponível em: https://stm.bookpi.org/CSR/article/view/11644. Acesso em: 18 jun. 2026.