See here
https://sites.google.com/site/bushmansnetlaboratory/lab/pof
That looks like an interesting site fixo - shame it's in russian tho' (Google Translate does a reasonable job with the conversion in Chrome mind you)
/*savedtoreadlater*/
Hi Alex,
Agreed, but just imagine, please, how it
is diificult for me, for example, to understand English using machine translator say Bing,
or another one, because of I have never learned English at all, just looking at the forum threads,
my bad, of course, but too late to teach an old dog the new tricks , mate..
See algoritms, it's good, trust me