As one of the administrators of the crashplace.de site, I will add that the original source of the above entry is the JG 54 loss list, by Günther Rosipal (available at
http://www.jg54greenhearts.com/LossList.htm).
The whole list had been included into the crashplace.de Database but is barely readable and had no source listed. I'm correcting the entries but it is a slow process...