M. Nonnenmacher, D. Reeb, and I. Steinwart. Joint European Conference on Machine Learning and Knowledge Discovery in Databases, page 87--102. Cham, Springer International Publishing, (2021)https://arxiv.org/abs/2011.02408.
I. Steinwart, D. Hush, and C. Scovel. Proceedings of the 22nd Annual Conference on Learning Theory, page 79--93. (2009)http://www.cs.mcgill.ca/~colt2009/papers/038.pdf.