More than meets the eye: A hybrid-locomotion robot with rotary flight and wheel modes. - Alex Kossett; Jesse Purvey; Nikolaos Papanikolopoulos (IROS, 2009)

Design of an improved land/air miniature robot. - Alex Kossett; Ruben D'Sa; Jesse Purvey; Nikos Papanikolopoulos (ICRA, 2010)