At the Argentinian UAPA website there is an interesting set of pages where for many countries composers and studies are shown.


The Dutch/Holanda article is written by Harold van der Heijden and shows some important Dutch composers and beautiful studies:


Also there is an interesting article about Jan Timman with 4 unknown studies once published on the website:

"Chess with Masters",

(not in the HHDB6).


The article about Jan Timman with the studies (in Spanish) is written by:  Dr. Jesús Seoane Sepúlveda.