@inproceedings{Mendes:2017:UCT:3139131.3139157,
 author = {Mendes, Daniel and Sousa, Maur\'{\i}cio and Lorena, Rodrigo and Ferreira, Alfredo and Jorge, Joaquim},
 title = {Using Custom Transformation Axes for Mid-air Manipulation of 3D Virtual Objects},
 booktitle = {Proceedings of the 23rd ACM Symposium on Virtual Reality Software and Technology},
 series = {VRST '17},
 year = {2017},
 isbn = {978-1-4503-5548-3},
 location = {Gothenburg, Sweden},
 pages = {27:1--27:8},
 articleno = {27},
 numpages = {8},
 url = {http://doi.acm.org/10.1145/3139131.3139157},
 doi = {10.1145/3139131.3139157},
 acmid = {3139157},
 publisher = {ACM},
 address = {New York, NY, USA},
 keywords = {3D user interfaces, DOF separation, custom manipulation axis, mid-air object manipulation, virtual reality},
}