@article{song2013reciprocaleasy,
 author = {Song P, Fu C-W, Goswami P, Zheng J, Mitra NJ, Cohen-Or D},
 title = {Reciprocal Frame Structures Made Easy},
 year = {2013},
 journal = {ACM Trans. on Graphics (TOG) (Proc. SIGGRAPH)},
 volume = {32},
 number = {4},
}