@article{JGG_2016_20_1_JGG_2016_20_1_a6,
     author = {V. Oxman and M. Stupel and A. Sigler },
     title = {Geometrical {Shapes} {Allowing} the {Construction} of the {Midpoint} of a {Segment} {Using} a {Straightedge} {Only}},
     journal = {Journal for geometry and graphics},
     pages = {75--83},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {2016},
     url = {http://geodesic.mathdoc.fr/item/JGG_2016_20_1_JGG_2016_20_1_a6/}
}