Doujinshi Dragonball *DBZ* Doujinshi's Real Or Made Up?

*DBZ* doujinshi's real or made up? - doujinshi dragonball

Http: / / bulmanl2.bu.funpic.de /? Img = Doujinshi / Dragon Ball 20Z/Pairings/Bulma% +% 26 + Vegeta / & s = 30 & image = 40

They look like real books. They have pages, stories, etc. doujinshi still do not understand, it's true or false? Akira Toriyama himself calls, or just the DBZ fans? If so, how they can secure their release? Thank you for answering! :)