Hey Guys,
According to Mark Winkelman's Errata page, new Errata items not listed there should be dropped here. This one is probably trivial as everyone probably knows off the top of their head how to handle it anyhow. Research is on the quick reference list on page 31, and is present in the Academic skill packet on page 29 (and the index does send you to both pages), but I don't see a section anywhere detailing the skill out, nor what stat it most commonly uses.
Thought you'd like to know.
Research should be fairly self-explanatory anyhow, though you're correct about it's omission. I'd use MA as the linked attribute.