@article {DrmotaKauersSpiegelhofer2016,
    AUTHOR = {Drmota, Michael and Kauers, Manuel and Spiegelhofer, Lukas},
     TITLE = {On a {C}onjecture of {C}usick {C}oncerning the {S}um of
              {D}igits of {$n$} and {$n+t$}},
   JOURNAL = {SIAM J. Discrete Math.},
  FJOURNAL = {SIAM Journal on Discrete Mathematics},
    VOLUME = {30},
      YEAR = {2016},
    NUMBER = {2},
     PAGES = {621--649},
      ISSN = {0895-4801},
       DOI = {10.1137/15M1041857},
       URL = {http://dx.doi.org/10.1137/15M1041857},
}