@article{articleb372541a,
title   = {Nonlinear corrections in basic problems of electro- and magneto-statics in the vacuum},
author = {Costa, Caio V. and Shabad, Anatoly E. and Guitman, Dmitri Maximovitch},
year = {2013},
doi = {10.1103/PhysRevD.88.085026},
journal   = {PHYSICAL REVIEW D}
}