 He is a contributor to "The Encyclopedia of Science Fiction" and to "The Encyclopedia of Fantasy", edited by John Clute and Peter Nicholls; and has written three major literary overviews in Swedish, a two-volume work about science fiction and one-volume works on psychological suspense fiction and on fantasy.As a translator, he has rendered Lemony Snicket's and many of Stephen King's novels into Swedish.He is a member of the Swedish Crime Fiction Academy and since 2004 edits and publishes the quarterly, resurrected "Nova science fiction" (which in its earlier incarnation he also edited from 1982 to 1987), the largest Scandinavian science fiction magazine.