@article{PIM_1994_N_S_56_70_a0,
     author = {Marica D. Pre\v{s}i\'c},
     title = {Representation of {Metamorphosis} {Grammar} in {Logic} {Grammar:} {Proof} {Trees} and {Their} {Lengths}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {1 },
     publisher = {mathdoc},
     volume = {_N_S_56},
     number = {70},
     year = {1994},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PIM_1994_N_S_56_70_a0/}
}