Helicopter Flight Control Law Design Using H∞ Techniques. - Ridwan Kureemun; Daniel J. Walker; Binoy J. Manimala; Mark Voskuijl (CDC/ECC, 2005)

Multivariable Control of the Bell 412 Helicopter. - Daniel J. Walker; Binoy J. Manimala; Mark Voskuijl; Arthur W. Gubbels (CDC, 2006)