Hi all, 
I have been in academia for some time and I find citing tedious. Latex and bibtex are great, but the bibtex files for papers on the web are often incomplete or change over time (e.g., a paper first in Arxiv is published in a conference). Is there anything that I can use to pull the official reference from somewhere? If not, why isn't there a centralized place for bibtex? 
So far I have been using Mendeley and fixing references by hand. It seems that referencing in latex is stuck in the past for something that should be relatively simple to fix (ie., have a repository with bibtex and people submit pull requests with changes). Having a DOI helps, but it does not guarantee that the bibtex is correct either.
Thanks!