David Ruffolo. 2015. Cosmic ray variations and related astrophysical processes. Nakhon Pathom:Mahidol University;
David Ruffolo. (2015) Cosmic ray variations and related astrophysical processes (รายงานผลงานวิจัย). Mahidol University:Nakhon Pathom.
David Ruffolo. Cosmic ray variations and related astrophysical processes. Nakhon Pathom:Mahidol University, 2015.
David Ruffolo. (2015) Cosmic ray variations and related astrophysical processes (รายงานผลงานวิจัย). Mahidol University:Nakhon Pathom.