Andy Bobeck was the sole discoverer of (4) and (5) and co-discoverer of (2) and (3); (1) was performed by P. Michaelis in P. Bonyhard's group.
Andy Bobeck oli ainuleiutaja (4) ja (5) ja kaasleiutaja (2) ja (3); (1) oli esitatud P. Bonyhardi grupis.