@inproceedings{LuckeEtAl2018,
  title={Truncated Variational Sampling for ‘Black Box’Optimization of Generative Models},
  author={L{\"u}cke, J{\"o}rg and Dai, Zhenwen and Exarchakis, Georgios},
  booktitle={International Conference on Latent Variable Analysis and Signal Separation},
  pages={467--478},
  year={2018},
  organization={Springer}
}