"Hiroshi TAKAHASHI,Yoichi KAMIHARA,Hiroaki KOGUCHI,Toshiyuki ATOU,Hideo HOSONO,Ikufumi KATAYAMA,Jun TAKEDA,Masahiro KITAJIMA,Kazutaka G NAKAMURA","Coherent Optical Phonons in the Iron Oxypnictide SmFeAsO<sub>1-x</sub>F<sub>x</sub> (x = 0.075)",,"Journal of the Physical Society of Japan",,"  80",,"  013707",2011,