@article{KJM_2009_32_1_a10,
     author = {Damir Vuki\v{c}evi\'c},
     title = {On the rules for the elimination of the non-canonical {Morgan} trees},
     journal = {Kragujevac Journal of Mathematics},
     pages = {117 - 122},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {2009},
     url = {http://geodesic.mathdoc.fr/item/KJM_2009_32_1_a10/}
}