@article{NSJOM_1980_10_Nonea_20,
     author = {Vojvodi\'c Gradimir},
     title = {The 

 {Craig} interpolation theorems for fixed-valued predicate calculi},
     journal = {Novi Sad Journal of Mathematics},
     pages = {173-175},
     publisher = {mathdoc},
     volume = {10},
     year = {1980},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_1980_10_Nonea_20/}
}