In fact I do (although this is no where near complete and getting a bit old now) I will try to move all these to a mendely group soon
This does a nice job of Comparing the various enrichment techniques for phosphopeptides
This paper does a great job of explaining the many complexities of phosphopeptdie analysis
Assay development for the determination of phosphorylation stoichiometry using multiple reaction monitoring methods with and without phosphatase treatment: application to breast cancer signaling pathways
This paper does a great job in explaining why phosphoylation is so important.