@inproceedings{ Martín-fernández_RUIZ_Rico-Romero,
author = { Enrique Martín-fernández and JUAN FRANCISCO RUIZ HIDALGO and Luis Rico-Romero } ,
title = { Meanings of Sine and Cosine as expressed by non-compulsory secondary school students },
booktitle = { Psychology of Mathematics Education 38 },
year = { 2014 },
pages = { None - None },
location = { Vancouver, Canadá },
}