Choukroun J introduced the amazing PRF to this world in 2000/2001. Later A-PRF and i-PRF were also introduced. As a general belief both these newer advances were also introduce by Choukroun. But i couldnt find any suitable reference to quote that inventory article/conference lecture/note etc. Different authors have given detailed technique on how to prepare A-PRF or i-PRF. If anybody have any reference link please suggest.