I think I started understanding the importance of the art of copy editing. I don't know if it's copy edit or copy-edit though...

I think his family name is Akiyama, not Akyama.

@Butch Doesn't matter. At least OP got the ő right, which is the most important thing. Copyeditors are happy to nitpick the en-dash thingy and apostrophe+s grammar but can't fix your ö.

If you're interested in links to codes and graphs, here is a good one: amazon.com/… And this one is an incredible monograph on "triple systems" amazon.com/… Well, there are so many good books for design theorists, and I can go on and on and on forever. But I think I should stop already...

Arguably the most popular textbook is the two volume set by Beth, Jungnickel, and Lenz: amazon.com/Design-Theory-Encyclopedia-Mathematics-Applicatio‌​ns/… It covers lots of important classical results. It's a tad dry reading though. The next one is elementary and much more casual amazon.com/Design-Theory-Discrete-Mathematics-Applications/d‌​p/… It's my favorite, but maybe it's too undergraduate-ish. This isn't design theory per se, but here's a really good book on the probabilistic method amazon.com/gp/product/0470170204

@Lubin There's no such thing as right or wrong in language. If you feel native speakers get something "wrong" too often, it's either that a significant minority speaks/writes in a way you don't like or that it's your language use that is different from the norm. This is how descriptive grammar works. Of course, if you're talking about a specific "style," there is the right way. But then, whether the writer is a native speaker doesn't matter. Anyone can adopt any standard style.

This thread on academia.stackexchange might help: academia.stackexchange.com/questions/2893/…

@Christian I think this is it: mathoverflow.net/questions/20567/…

Added the combinatorial designs tag.