TY - JOUR AU - Samuel G. Moreno AU - Esther M. GarcĂ­a-Caballero TI - To be integer or not to be rational: that is the questio$\sqrt{N}$ JO - The Teaching of Mathematics PY - 2013 SP - 79 VL - XVI IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TM2_2013_XVI_2_a2/ LA - en ID - TM2_2013_XVI_2_a2 ER -