[gutvol-d] Looking for help from German speaker

I have found two author records in the PG catalog that should probably be combined, but I'd like a German speaker to help confirm that. Is the author of PG#15891, Velimirovitch, Nicola, the same person as Velimirovic, Nikolai? Description of this author can be found here: http://en.wikipedia.org/wiki/Nikolai_Velimirovi%C4%87 http://de.wikipedia.org/wiki/Nikolaj_Velimirovi%C4%87 Thanks, Andrew