@article{PDA_1985_13_1_a2,
     author = {D. Djurovi\'c and D. Staji\'c},
     title = {Short {Period} {Cyclic} {Variations} of {Solar} {Activity} and {Their} {Geophysical} {Consequences}},
     journal = {Publications of the Department of Astronomy},
     pages = {19 - 25},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {1985},
     url = {http://geodesic.mathdoc.fr/item/PDA_1985_13_1_a2/}
}