"As a songwriter, it’s easy to get wrapped up in the creativity and excitement of writing and forget about the business side of things." In this recent article posted by our friends at DIY Musician, you can learn how to properly claim your work and create split sheets to avoid confusion and headaches when it comes to co-writing.
http://diymusician.cdbaby.com/2014/11/business-songwriting-co-writes-split-sheets