@article{KJM_2001_23_a13,
     author = {Tatjana Timotijevi\'c},
     title = {One implementation of {PL} prover algorithm},
     journal = {Kragujevac Journal of Mathematics},
     pages = {119 },
     year = {2001},
     volume = {23},
     zbl = {1004.68142},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2001_23_a13/}
}