?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Pham%2C+Van+Hoi&rft.aulast=Pham&rft.aufirst=Van+Hoi&rft.issue=6&rft.volume=30&rft.date=June+2013&rft.atitle=Control+of+whispering-gallery-mode+spectrum+from+erbium-doped+silica+microsphere+lasers&rft.title=J.+Opt.+Soc.+Am.+B&rft.pages=1586-1589&rft.genre=article