@article{RACSAM_2009_2009_1_a9,
     author = {Hernando, A. and  de Ledesma, L.},
     title = {A technique for dynamically measuring and modifying relevance while problem solving.},
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales. Matem\'aticas},
     publisher = {mathdoc},
     volume = {103},
     number = {1},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RACSAM_2009_2009_1_a9/}
}