@article{GDZPPN002354462, title = {An inequality for convex curves in the plane.}, journal = {Mathematica Scandinavica}, volume = {40}, year = {1977}, pages = {293-300}, zbl = {0369.52005}, url = {http://dml.mathdoc.fr/item/GDZPPN002354462} }
Sjöln, Per. An inequality for convex curves in the plane.. Mathematica Scandinavica, Tome 40 (1977) pp. 293-300. http://gdmltest.u-ga.fr/item/GDZPPN002354462/