@article{PNA_2008__2_3_43750,
     author = {Vilma Mesa},
     title = {Solving {Problems} on {Functions:} {Role} of the {Graphic} {Calculator.}},
     journal = {PNA},
     pages = {109},
     publisher = {mathdoc},
     volume = {2},
     number = {3},
     year = {2008},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/PNA_2008__2_3_43750/}
}