https://www.animenewsnetwork.com/news/2012-07-17/discotek-media-adds-lupin-iii/the-secret-of-mamo-film
Discotek Media Adds Lupin III: The Secret of Mamo Film - News - Anime News Network
DVD release to include 4 English dubs from Geneon, Streamline Pictures, Manga Entertainment UK, TOHO
the secret of mamo