@article{10_1017_fms_2016_2,
     author = {TOMASZ SCHOEN and OLOF SISASK},
     title = {ROTH{\textquoteright}S {THEOREM} {FOR} {FOUR} {VARIABLES} {AND} {ADDITIVE} {STRUCTURES} {IN} {SUMS} {OF} {SPARSE} {SETS}},
     journal = {Forum of Mathematics, Sigma},
     publisher = {mathdoc},
     volume = {4},
     year = {2016},
     doi = {10.1017/fms.2016.2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/fms.2016.2/}
}