@article{10_1007_s10587_011_0064_4,
     author = {Verpoort, Steven},
     title = {Curvature functionals for curves in the equi-affine plane},
     journal = {Czechoslovak Mathematical Journal},
     pages = {419--435},
     publisher = {mathdoc},
     volume = {61},
     number = {2},
     year = {2011},
     doi = {10.1007/s10587-011-0064-4},
     mrnumber = {2905414},
     zbl = {1249.49028},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.1007/s10587-011-0064-4/}
}