Greetings ladies and gentlemen:
I'm developing a free as in freedom piece of software and I'm trying to use
the GPL licence.
I wrote everything in the application but due to the nature of the project, I
had indispensable help from a good scientist in the science components of the
application. He completely agrees with me about the licence and I know I have
to write a header in every source line with the copyright, the name of the
author, the date and the authorization:
Should I include his name on the header of every source code alongside mine
even though he/she has not wrote a single line of code?
If the answer is no, where should I place his/her name because his/her help
was crucial for the success and I find him/her should be considered a co
author?
Thank you