Boom Overture Supersonic Aircraft's Symphony Engine Now Has a Design Team - autoevolution

30 Years Before Boom, Sukhoi and Gulfstream Nearly Built a Mach 2 Capable Business Jet - autoevolution

New collaboration for Supersonic Overture engine program design - Boom Supersonic and Rolls-Royce

Boom Supersonic Announces “Symphony” Engines for its Supersonic Airframe – EDI Weekly: Engineered Design Insider

Boom - Symphony

Boom - Symphony

Inside Boom Supersonic's Own Symphony Engine Powering Overture Jet

Boom takes the wraps off its supersonic Symphony engine design

Boom Supersonic Plans to Design and Build the Engine for the Overture Aircraft

Boom's New Engine Plan Is Ambitious… at Best – Cranky Flier