@inproceedings{hennessey2017how2sketchobjects,
 author = {Hennessey JW, Liu H, Winnemöller H, Dontcheva M, Mitra NJ},
 title = {How2Sketch: Generating Easy-To-Follow Tutorials for Sketching 3D Objects},
 year = {2017},
 booktitle = {ACM Interactive 3D Graphics and Games},
}