Aladar Gerevich, Hungarian Fencer

Aladar Gerevich is an Olympic Sabre Fencer for Hungary who won the Gold Medal for the Men's Team Sabre event six times in a row. He has been the only athlete ever, to win a Gold Medal for the same event over six Summer Olympics, even more impressive is that his career had been interrupted by the cancellation of the Olympics due WWII. The final Gold Medal he won was in the 1960 Summer Games at the age of 50.

I'm trying to write a paper on him, however, I can't seem to find any sources that contain more in depth detail about his life. I guess this is because he is a Hungarian Athlete and I'm an American student. Any biography or academic sources would probably be published in Hungary. I need anything: interviews, biographies, memoirs. Something that I can cite in the Chicago Manual Format.