@article{JGG_2011_15_1_JGG_2011_15_1_a4,
     author = {P. Casu },
     title = {Geometric {Analysis} of {Architectural} {Drawings} of the 19th {Century}},
     journal = {Journal for geometry and graphics},
     pages = {69--78},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/JGG_2011_15_1_JGG_2011_15_1_a4/}
}