Primary PDF: proceedings.mlr.press/v37/rezende15.pdf . PMLR37,1530–1538(2015). The PDF title page gives Danilo Jimenez Rezende and Shakir Mohamed; the publisher HTML shortens the first byline to Danilo Rezende. Section3, equations5–7, gives invertible density transformations and composition; only these primary bylines and mathematical constructions are cited.