TY  - BOOK
AU  - Boyvalenkov,  Peter
AU  - Kolev, Emil
AU  - Mushkarov, Oleg
AU  - Nikolov, Nikolai
TI  - Bulgarian Mathematical Competitions 2003-2006
SN  - 978-9380663937 (pbk.)
U1  - 510 
PY  - 2014///
CY  - Kolkata
PB  - Levant Books
KW  - Mathematics
ER  -