Nikolaj Højberg - Danish author - b. 1973
| English title | Danish title | translator | published | format | publisher | ISBN |
| The E-Puzzle ( story in Sky City ) | O-puslespillet | Riis, Bente Bernhard | ( 2008 ) 2011 | tp/b | Science Fiction Cirklen | 08771141588 / 9788771141580 |