I am unable to find an academic article on point, but I am sure that my searching is incomplete. Desire and Pleasure are such common topics that references to the point could be made any number of places, but we're looking for something very specific to the effect that Epicurus was looking at the topic differently from Plato and/or others. I'll keep looking!
What Is The Relationship Between "Hedonic Calculus" Analysis" and "Natural and Necessary Desire" Analysis?
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As to Lucretius, I am finding zero reference to the natural and necessary categories.
Yes, of course we have this section, 2.20, but it does not expand on the idea very much.
