Importance Weighted Autoencoders, Yuri Burda, Roger Grosse, Ruslan Salakhutdinov, 2016International Conference on Learning Representations (ICLR)DOI: 10.48550/arXiv.1509.00519 - The original paper introducing the Importance Weighted Autoencoder objective for tighter likelihood bounds in VAEs.
Deep Learning, Ian Goodfellow, Yoshua Bengio, Aaron Courville, 2016 (MIT Press) - A comprehensive textbook providing a background on Variational Autoencoders, the ELBO, and related generative models.