Exactly. Phenomenology is a method, not a thing to be researched... so truthfully, I think
how to select participants while conducting a phenomenological study is sort of a trick question.
The research would be "A Phenomenological Study of _________".
How you select your participants will be based on what is in the blank,
not on the fact that the study is a Phenomenological one.
Despite this, you may find some helpful links here:
http://www.google.com/search?num=100...ts&btnG=Search