TY  - BOOK
AU  - Andreescu, Titu.
AU  - Feng, Zuming
TI  - 103 trigonometry problems: from the training of the USA  IMO team 
SN  - 81-8128-339-2
U1  - 516.24 AND 
PY  - 2004///
CY  - Boston
KW  - Trigonometrie
ER  -