@article{COCV_2008__14_1_148_0,
     author = {M\"unch, Ingo and Neff, Patrizio},
     title = {Curl bounds grad on {SO(3)}},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {148--159},
     publisher = {EDP-Sciences},
     volume = {14},
     number = {1},
     year = {2008},
     doi = {10.1051/cocv:2007050},
     mrnumber = {2375754},
     zbl = {1139.74008},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv:2007050/}
}