@article{10_4064_aa_64_4_383_388,
     author = {H. Lenstra},
     title = {Generating units modulo an odd integer by addition and subtraction},
     journal = {Acta Arithmetica},
     pages = {383--388},
     publisher = {mathdoc},
     volume = {64},
     number = {4},
     year = {1993},
     doi = {10.4064/aa-64-4-383-388},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa-64-4-383-388/}
}