In books

Gino Di Felice (2017). Chess International Titleholders 1950-2016. Publisher: McFarland & Company, Incorporated Publishers. ISBN-10:147667132x, ISBN-13: 9781476671321, Paperback: 376 pages. Printed in United States of America.
page 81 ... Dovramadjiev, Tihomir Atanassov (Bul), b. 22 May 1979 Varna, FM 2004. Peak rating 2356 (January 2011).
https://www.amazon.com/Chess-International-Titleholders-1950-2016-Felice/dp/147667132X

https://books.google.bg/books?id=0dBHDwAAQBAJ&printsec=frontcover&dq=Chess%20International%20Titleholders%2C%201950-%202016&hl=bg&sa=X&ved=0ahUKEwi82NK65oDkAhVSxaYKHfDyBcwQ6AEIKDAA#v=onepage&q&f=false

Gary Lane (2001). The Ultimate Closed Sicilian. B. T. Batsford Ltd, London. First published in 2001 / ISBN 0 7134 8687 2. British Library Cataloguing-in-Publication Data.
Main Games....Dovramadjiev-Semkov p.58 - 60 / 1996
https://www.godaddy.com/forsale/castlemind.com?utm_source=TDFS_BINNS&utm_medium=BINNS&utm_campaign=TDFS_BINNS&traffic_type=TDFS_BINNS&traffic_id=binns&

https://www.amazon.com/Ultimate-Closed-Sicilian-Gary-Lane/dp/0713486872