May 2, 2019
Pratt & Whitney's F135 Fighter Engine Is Poised To Dominate For Decades To Come
Loren Thompson
Contributor
Aerospace & Defense
https://www.forbes.com/sites/lorenthompson/2019/05/02/pratt-whitneys-f135-fighter-engine-is-poised-to-dominate-for-decades-to-come/
Pratt & Whitney’s lean, additive manufacturing
2014
https://leehamnews.com/2014/05/28/pratt-whitneys-lean-additive-manufacturing/