books to add in Related Links

[Beliavsky]

I suggest adding the sites associated with two books by Ruey Tsay to the Related Links section.

An Introduction to Analysis of Financial Data with R
https://faculty.chicagobooth.edu/ruey-s-tsay/research/an-introduction-to-analysis-of-financial-data-with-r

Multivariate Time Series Analysis with R and Financial Applications
https://faculty.chicagobooth.edu/ruey-s-tsay/research/multivariate-time-series-analysis-with-r-and-financial-applications

[eddelbuettel]

I think I may at some point have had them, but may have removed them as they are a little TS specific. And while 'classics' they are also not exactly recent. Will ponder this a little more.