Arthur H. Lefebvre (1923-2003) was Emeritus Professor at Cranfield University and Purdue University.

Dilip R. Ballal is Hans von Ohain Distinguished Chair Professor at the University of Dayton.

Arthur H. Lefebvre (1923-2003) was Emeritus Professor at Cranfield University and Purdue University.

Dilip R. Ballal is Hans von Ohain Distinguished Chair Professor at the University of Dayton.