@article{GDZPPN002241633, title = {Ueber die ann\"ahernde Rectification beliebiger Curven}, journal = {Mathematische Annalen}, volume = {3}, year = {1871}, pages = {505-509}, zbl = {03.0313.02}, url = {http://dml.mathdoc.fr/item/GDZPPN002241633} }
Somoff. Ueber die annähernde Rectification beliebiger Curven. Mathematische Annalen, Tome 3 (1871) pp. 505-509. http://gdmltest.u-ga.fr/item/GDZPPN002241633/