H&K in The DiskusBrief Magazine
Again, H & k is cited in one of the most important magazine specialized in Discus fish, pictures attached.
H&K in the Germany Discus Magazine Discus live
H & K is, in a report, the German magazine, Discus live, by Bernd Degen.
H & K in the Discus Book 02 Aquapress
H & K is in a story book Discus Book 02, the Aquapress, by Heiko Bleher see photos.
H&K in the new Discus yearbook 2010/2011
Report in an electronic journal publishes the work of H & K.