@article{TM2_2009_XII_2_a2,
     author = {Petr Eisenmann},
     title = {A contribution to the development of functional thinking of pupils and students},
     journal = {The Teaching of Mathematics},
     pages = {73 },
     publisher = {mathdoc},
     volume = {XII},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM2_2009_XII_2_a2/}
}