@article{article71ca4f8b,
title   = {Div–curl type estimates for elliptic systems of complex vector fields},
author = {Hoepfner, G and Hounie, J and Picon, Tiago Henrique},
year = {2015},
doi = {10.1016/j.jmaa.2015.04.054},
journal   = {Journal of Mathematical Analysis and Applications}
}