@article{CRMATH_2016__354_8_825_0,
     author = {Squassina, Marco and Volzone, Bruno},
     title = {Bourgain{\textendash}Br\'ezis{\textendash}Mironescu formula for magnetic operators},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {825--831},
     publisher = {Elsevier},
     volume = {354},
     number = {8},
     year = {2016},
     doi = {10.1016/j.crma.2016.04.013},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2016.04.013/}
}