@article{PDA_1989_17_a3,
     author = {N. Pejovi\'c},
     title = {Atmospheric {Excitation} and {Variations} in the {Length} of {Day}},
     journal = {Publications of the Department of Astronomy},
     pages = {37 },
     year = {1989},
     volume = {17},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PDA_1989_17_a3/}
}