| Invitation to the AMSAT-DL Symposium 2020 - DD1US |
| Invitation to the AMSAT-DL Symposium 2020 - DD1US https://drive.google.com/file/d/1wfGm5oxcJ6DKAs1cUgMt9b1wd4a0OZRX/view?usp=sharing https://drive.google.com/file/d/10jap5vGInUFS5aYMpjmXTCH-kbdeO3b2/view?usp=sharing |