I have been researching a specific topic in computer science for a couple of years now and a well established professor and his students have recently published a couple of publications in that topic too. In their work they do reference the well known and well cited previous work that basically everyone in that topic references, but I have noticed that they ignore (don't reference) a couple of publications that are doing essentially what they are publishing about, i.e. extremely related work. And I am wondering even though there is a gap of a couple of years between the work they have published and the available previous literature how did they miss referencing the relevant previous work? Was it done intentionally or did they just do a hasty job at finding more recent related work?
Either way my main concern here is if there is anything that can be done to remedy the situation now, since the paper has already been published?