@article{PDA_1988_16_1_a1,
     author = {L. Sehnal},
     title = {Model of the {Upper} {Total} {Density} {Distribution} $TD_{88}$},
     journal = {Publications of the Department of Astronomy},
     pages = {19 - 22},
     year = {1988},
     volume = {16},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/PDA_1988_16_1_a1/}
}