{HEAD ~ A detailed explanation} of these color parameters is disclosed in an article by {TAIL ~ Charles A. Poynton} 
is disclosed by
{ HEAD ~ A detailed explanation } of these color parameters is disclosed in an article by { TAIL ~ Charles A. Poynton }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH REL REL OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL