That isn't that simple, as there is a cultural component in the order authors are listed (https://en.m.wikipedia.org/wiki/Academic_authorship#Order_of...)

Also, at CERN, with papers with 1000+ authors, any chance of picking the 'right' name from the list approaches zero, anyways. Such papers typically list a "corresponding author" to whom to send inquiries.

Alphabetic order also gave us the fun Google search phrase "Does G. Aad exist?" (Gives a link to https://jeffollerton.wordpress.com/2014/05/28/does-gaad-exis..., but Google also suggests a correction to your "typo")