(1)
Aunio, P.; Mononen, R.; Laine, A.; van der Aalsvoort, G.; Compagnie, C.; Desoete, A.; Kroesbergen, E.; Passolunghi, M. C.; van Schaik, M.; Tapola, A.; de Wit, T. Mathematical Learning Difficulties – Snapshots of Current European Research. LUMAT 2015, 3, 647-674.