lpsolve - solver in R

To study:
http://flovv.github.io/From_descritpive_to_prescriptive/
https://icyrock.com/blog/2013/12/linear-programming-in-r-using-lpsolve/
http://lpsolve.r-forge.r-project.org/
http://horicky.blogspot.co.uk/2013/01/optimization-in-r.html
http://lpsolve.sourceforge.net/5.5/R.htm