Yesterday's seminar made reference to a paper by N.A. Bahcall et. al. in which they discuss the so-called "cosmic triangle". I think it's a nice paper, in which they summarize in a very accessible way what we know about the current abundances in the universe; and how different experiments indicate that LamdaCDM seems to be the best model to fit the data.
Here's the link to the paper for those of you who might be interested in having a look :)