1 - 102 Combinatorial problems : From the training of the USA IMO TeamAndreescu, Titu (1956-....) / Feng, ZumingCote : [08.7 AND 03]
2 - Complex numbers from A to ... ZAndreescu, Titu (1956-....) / Andrica, Dorin (1956-....)Cote : [30 AND 06]
