Etxeberria, Urtzi, and Aritz Irurtzun. 2015. “{The Emergence Of Scalar Meanings}”. Frontiers In Psychology 6. Frontiers In Psychology. doi:10.3389/fpsyg.2015.00141. https://journal.frontiersin.org/Article/10.3389/fpsyg.2015.00141/abstract.