publication venue for A nonlinear disturbance observer for robotic manipulators without velocity and acceleration measurements. 45:-. 2023-01-01 Application of a nonlinear observer for estimation of variables in a PEM fuel cell system. 39:1323-1332. 2017-01-01 Dynamic response in non-perpendicular stiff main directional rotors using coordinate transformation. 37:1615-1622. 2015-01-01