URLs

• https://www.mangaupdates.com/authors.html?id=102
• http://en.wikipedia.org/wiki/Shuichi_Shigeno
• http://ja.wikipedia.org/wiki/しげの秀一
• https://anidb.net/creator/6396
• https://www.animenewsnetwork.com/encyclopedia/people.php?id=5781