Fibers of {TAIL ~ YBa2 Cu3 Ox} have been produce by {HEAD ~ pendant drop melt extraction} 
Fibers of { TAIL ~ YBa2 Cu3 Ox } have been produce by { HEAD ~ pendant drop melt extraction }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD