Links
[1] https://hootsgo.org/?q=node/6429
[2] http://pdg.ihep.su/2012/reviews/rpp2012-rev-cosmological-parameters.pdf
[3] http://pdg.lbl.gov/2007/reviews/hubblerpp.pdf
[4] http://pdg.lbl.gov/2006/reviews/hubblerpp.pdf
[5] https://www.dmns.org/media/367270/tr2005-12.pdf
[6] http://www.ias.ac.in/pramana/v63/p817/fulltext.pdf