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List of Bulgarian inventors and discoverers

This is a list of Bulgarian inventions.

The Bulgar calendar was a calendar system used by the old Bulgarians to measure the duration of the year. It was acknowledged by UNESCO as the most accurate ancient calendar .


  1. ^ Linde, Arvid, 2011, Preston Tucker & Others: Tales of Brilliant Automotive Innovations, Veloce Publishing PLC, ISBN 978-1-84584-017-4
  3. ^ Peter D. Petroff Dies at 83; Devised a Digital Wristwatch
  4. ^ SAMUEL REFETOFF, MD, Interview conducted by Michael Chappelle, June 4, 2011
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