Data Envelopment Analysis Toolbox and a paper in the Journal of Statistical Software explaining how it works, together with a replication file and data, are available to download from the Journal of Statistical software website:
https://www.jstatsoft.org/article/view/v095i03
GibHub:
The source code and all the examples are also available to download from the following repository on GitHub:
https://github.com/javierbarbero/DEAMATLAB