@article{SMJ2_1998_24_2_a4,
     author = {Landjev, Ivan and Topalova, Svetlana},
     title = {New {Symmetric} (61,16,4) {Designs} {Invariant} {Under} the {Dihedral} {Group} of {Order} 10},
     journal = {Serdica Mathematical Journal},
     pages = {179--186},
     publisher = {mathdoc},
     volume = {24},
     number = {2},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SMJ2_1998_24_2_a4/}
}