PRACTICAL EQUATION OF TORQUE FOR A CONCAVE WING ROTOR DRIVE. Journal of Pharmaceutical Negative Results, [S. l.], p. 7613–7617, 2022. DOI: 10.47750/pnr.2022.13.S07.918. Disponível em: https://www.pnrjournal.com/index.php/home/article/view/7978.. Acesso em: 5 jun. 2026.