Ah, I somewhat see the confusion. Green OA doesn't require the publisher to publish other versions for free, it just means you are allowed to publish them. Typi

Ah, I somewhat see the confusion. Green OA doesn't require the publisher to publish other versions for free, it just means you are allowed to publish them. Typically you'd publish them via an institutional repository, preprint server (often discipline specific), or in one of a number of free online services.