@article{TM2_2011_XIV_1_a1,
     author = {Miodrag Mateljevi\'c and Aleksandra Rosi\'c and Marek Svetlik},
     title = {A problem from the {PISA} assessment relevant to calculus},
     journal = {The Teaching of Mathematics},
     pages = {15 },
     publisher = {mathdoc},
     volume = {XIV},
     number = {1},
     year = {2011},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM2_2011_XIV_1_a1/}
}