@unpublished{dali2015,
 author = {J. M. Siskind},
 title = {What every machine-learning researcher should know about AD},
 location = {DALI Workshop on Probabilistic Programming},
 date = 10,
 month = apr,
 year = 2015,
 url = {http://engineering.purdue.edu/~qobi/tweet-talks/dali2015-slides.pdf}}