[walterbell]

Are there any published references on this technique, or a law firm that is well-versed in it?

[SeoxyS]

I don't know of any public resources on the topic, or of any law firms that are particularly adept at this. However, I have seen it done in practice.

I'd recommend talking to a law firm that's well versed in startup corporate law. The big firms Cooley and Orrick come to mind.