McGeoch, D. J., E. W. McGookin, and S. S. Houston. “Sliding Mode Implementation of an Attitude Command Flight Control System for a Helicopter in Hover”. Acta Polytechnica 45, no. 4 (January 4, 2005). Accessed May 2, 2024. https://ojs.cvut.cz/ojs/index.php/ap/article/view/748.