@inproceedings{kratz2011protractor3d,
 author = {Kratz, Sven and Rohs, Michael},
 title = {Protractor3D: A Closed-Form Solution to Rotation-Invariant 3D Gestures},
 series = {IUI '11},
 year = {2011},
 month = feb,
 location = {Palo Alto, CA, USA},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {Gesture recognition, gesture-based interaction, template matching, rotation invariance, nearest neighbor approach},
}