Free associate norms for 139 European Portuguese words for children from different age groups
Behavior Research Methods (2014) - Comment
pubmed: 24048979  doi: 10.3758/s13428-013-0388-0  issn: 1554-3528 

Montserrat Comesaña, Isabel Fraga, Ana Júlia Moreira, Carla Sofia Frade, Ana Paula Soares