@ARTICLE{9376774,
    author={Shajahan, Dimple A. and Varma T., Mukund and Muthuganapathy, Ramanathan},
    journal={IEEE Geoscience and Remote Sensing Letters}, 
    title={Point Transformer for Shape Classification and Retrieval of Urban Roof Point Clouds}, 
    year={2022},
    volume={19},
    number={},
    pages={1-5},
    doi={10.1109/LGRS.2021.3061422}
}