So I'm really looking into a particular lab for a postdoc, one that I am fairly familiar with. Before I contact the PI, I am brushing up on some of their most recent publications. The question is how far back do I dig? My thought is that since I am familiar with what they do, I'll go back and read what they've published in the last three years as this is the most relevant to what's going on in the lab. Also I've pulled any review from the lab in the last 5 years, while some may no longer be topical, I want to get their slant or perspective on how they see the field.
So dear readership (n=4), how far back would you recommend me going in the paper pile?