@Article{ MOLINA_CASTRO_MASON:75-86,
author = { MARTA MOLINA and ENCARNACIÓN CASTRO and JOHN H. MASON } ,
title = { ELEMENTARY STUDENTS APPROACHES TO SOLVING TRUE/FALSE NUMBER SENTENCES },
journal = { PNA: REVISTA DE INVESTIGACIÓN EN DIDÁCTICA DE LA MATEMÁTICA },
year = { 2008 },
volume = { 2 },
issn = { 1886-1350 },
pages = { 75-86 },
doi = { www.pna.es },
}