3Michalaki VJ,Hall J,Henk JM, et al.Definitive radiotherapy for extramedullary plasmacytomas of the head and neck[].British Journal of Radiology.2003
4William M. Mendenhall MD Charles M. Mendenhall MD and Nancy Price Mendenhall MD.Solitary plasmacytoma of bone and soft tissues[].American Journal of Otolaryngology.2003