Heraldikai lexikon/Váradi regesztrum

http://books.google.sk/books?id=lH9UAAAAcAAJ&pg=PT10&lpg=PT10&dq=Ritus+explorandae+veritatis&source=bl&ots=63gppn2xJg&sig=rQrN1bvBKFj7og-ksDPdL3e0f8c&hl=hu&sa=X&ei=HiQYVJTpJIzAPJT4gMgD&ved=0CFQQ6AEwBw#v=onepage&q=Ritus%20explorandae%20veritatis&f=false

http://lexikon.katolikus.hu/V/V%C3%A1radi%20Regestrum.html

Ritus explorandae veritatis, quo Hungarica natio in dirimendis controversiis ante annos 340 usa est, et ejus testimonia plurima in sacrario templi Varadiensis reperta. - Colpsvarii, (G. H.) 1550