ALSID, Safa Ahmed Babikir. Harmonic C^*-Categories of Longitudinal Pseudo Differential Operators over Flag Variety. International Journal of Sciences: Basic and Applied Research (IJSBAR), Jordan, v. 59, n. 1, p. 100–111, 2021. Disponível em: https://www.gssrr.org/JournalOfBasicAndApplied/article/view/12717. Acesso em: 12 sep. 2025.