A. Takio Kitagawa, ?Unauthorized Use Of Military Satellites: Threats To Mission Security And Integrity?, HamSCI Workshop 2026. HamSCI, Newington, CT, 2026.

A. Takio Kitagawa, ?Use of the Short Wave Radio to prove the ionosphere with students from a public school in Brazil?, HamSCI Workshop 2021. HamSCI, Scranton, PA (Virtual), 2021.