@article{JAC_1998__7_1_a1,
     author = {Muzychuk, Mikhail},
     title = {Difference sets with $n=2p^m$},
     journal = {Journal of Algebraic Combinatorics},
     pages = {77--89},
     publisher = {mathdoc},
     volume = {7},
     number = {1},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_1998__7_1_a1/}
}