Model Airplane News - fevereiro 1964

Model Airplane News - fevereiro 1964

http://www.rclibrary.co.uk/files_titles/1587/ModelAirplaneNews_1964_02.pdf

RCM - fevereiro 1970

RCM - fevereiro 1970

http://www.rclibrary.co.uk/files_titles/1585/RCM_1970_02_February.pdf

Phoenix Model Airplane Club - Dezembro 2012

Phoenix Model Airplane Club - Dezembro 2012

https://freeflight.org/ClubNewsletters/2012/PMAC2012-12.pdf

San Diego Orbiters - novembro 2013

San Diego Orbiters - novembro 2013

https://freeflight.org/ClubNewsletters/2013/SDO2013-11.pdf

Plano Hawker Typhoon "catapult glider"

https://freeflight.org/ClubNewsletters/2013/SDO2013HawkerTyphoonbyASchandel.pdf

Popular Science - Julho 1963

Popular Science - Julho 1963

https://books.google.pt/books?id=pSADAAAAMBAJ&printsec=frontcover&hl=pt-PT&source=gbs_ge_summary_r&cad=0#v=onepage&q&f=true