@article{DCG_1992__7_4_131181,
     author = {V. Kantabutra},
     title = {Motions of a {Short-Linked} {Robot} {Arm} in a {Square.}},
     journal = {Discrete & computational geometry},
     pages = {69--76},
     publisher = {mathdoc},
     volume = {7},
     number = {4},
     year = {1992},
     zbl = {0742.68032},
     url = {http://geodesic.mathdoc.fr/item/DCG_1992__7_4_131181/}
}