@article{TM2_2009_XII_1_a2,
     author = {George Dimakos and Emmanouil Nikoloudakis},
     title = {Analyzing the role of shapes in the process of writing proofs in model of p-m combinations},
     journal = {The Teaching of Mathematics},
     pages = {15 },
     publisher = {mathdoc},
     volume = {XII},
     number = {1},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM2_2009_XII_1_a2/}
}