LXIII. On the resistance of a conductor of uniform thickness whose breadth suddenly changes, and on the shapes of the stream-lines in the immediate neighbourhood
Charles H. Lees. "LXIII. On the resistance of a conductor of uniform thickness whose breadth suddenly changes, and on the shapes of the stream-lines in the immediate neighbourhood." The London Edinburgh and Dublin Philosophical Magazine and Journal of Science 16.95 (1908) 734-739