Comparison of porosity models for fluidized beds. Kurdistan Journal of Applied Research, [S. l.], v. 2, n. 1, p. 74–83, 2017. DOI: 10.24017/science.2017.1.13. Disponível em: https://kjar.spu.edu.iq/index.php/kjar/article/view/136.. Acesso em: 8 aug. 2025.