TY  - BOOK
AU  - Andreescu, Titu  .
TI  - 103 trigonometry problems : from the training of the USA IMO team / 
SN  - 978-81-8128-339-9
U1  - B5 
PY  - 2009///
CY  - New Delhi : 
PB  - Springer (India) Pvt. Ltd. , 
KW  - Trigonometry- Problems, exercises, etc
ER  -