@article{10_4153_CJM_2011_030_x,
     author = {Misamore, Michael D.},
     title = {Nonabelian ${{H}^{1}}$ and the {\'Etale} {Van} {Kampen} {Theorem}},
     journal = {Canadian journal of mathematics},
     pages = {1388--1415},
     year = {2011},
     volume = {63},
     number = {6},
     doi = {10.4153/CJM-2011-030-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2011-030-x/}
}