{HEAD ~ The method} 1, wherein {TAIL ~ the phosphorus} derivative is selected from the group consisting of phosphonates and phosphonic acids 
wherein
{ HEAD ~ The method } 1 , wherein { TAIL ~ the phosphorus } derivative is selected from the group consisting of phosphonates and phosphonic acids
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH