Publisher : Alex M Stoll, JoeBen Bevirt, Percy P. Pei, Edward V. Stilson (Joby Aviation)(US) 

Title : Conceptual Design of the Joby S2 Electric VTOL PAV

Publication Year : 2014 June 16-20

Download Link : https://www.jobyaviation.com/S2ConceptualDesign%28AIAA%29.pdf