Nonlinear gains recursive sliding mode control for flight-path angle of UAVs
SUN Xiu-xia, LIU Xi, XU Song, CAI Ming, GAO Yang-jun, TANG Qiang
Systems Engineering and Electronics . 2015, (2): 379 -384 .  DOI: 10.3969/j.issn.1001-506X.2015.02.24