انتشارات Gil
Bulgarian mathematical competitions 2003 - 2006
Boyvalenkov, Kolev, Mushkarov, Nikolov., 2007
360 problems for mathematical contests
Andreescu T., 2003
An introduction to Diophantine equations
Andreescu T., 2002
An Introduction to Diophantine Equations
Andreescu/Andrica, 2002
An introduction to Diophantine equations
Andreescu T., 2002
(Vol. II Pt. I) Secrets in Inequalities
Pham Kim Hung
Probleme-de-Structuri-Algebrice
Beniamin Bogosel, 2011
Whatever You’re Doing Now You Can Do It Better!: Your Guide to the Alexander Technique
Anthony J. Taylor, 2004
