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References
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.. [Wong17] Wai Keung Wong, Zhihui Lai, Jiajun Wen, Xiaozhao Fang, Yuwu Lu (2017),
   *Low-Rank Embedding for Robust Image Feature Extraction*,
   `IEEE Transactions on Image Processing <https://ieeexplore.ieee.org/abstract/document/7893780/>`__.

.. [Matsushima19] Shin Matsushima, Maria Brbic (2019),
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   `Advances in Neural Information Processing Systems <http://papers.nips.cc/paper/9408-selective-sampling-based-scalable-sparse-subspace-clustering>`__.

.. [Shi21] Qianqian Shi, Xinxing Li, Qirui Peng, Chuanchao Zhang, Luonan Chen (2021),
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