Anthony, Robert N. & Govindarajan, Vijay & Hartmann, Frank G.H. & Kraus, Kalle & Nilsson, Göran

Thurner, Michael Marcus & Lukas, Leo & Hartmann, Cathrin & Haensel, Hubert & Böhmert, Frank & Anton, Uwe

Finke, Josh & Hartmann, Dennis

Laßwitz, Kurd & Renard, Maurice & Bierce, Ambrose & Friedell, Egon & Beljajew, Alexander & Doyle, Arthur Conan & Grunert, Carl & Bellamy, Edward & Brjussow, Valeri & Čapek, Karel & Minkow, Swetoslaw & Verne, Jules & Schmitz, Hermann Harry & London, Jack & O’Brien, Fitz-James & Heijermans, Hermann & Stockton, Frank R. & Lemnaru, Oscar & Poe, Edgar Allan & Aîné, Joseph-Henri Rosny & Velinský, Ladislav & Scheerbart, Paul & Karinthy, Frigyes & Wells, Herbert George

Hartman, C.A.

Hartman, Kent