TY - JOUR AU - James Samson AU - Chris Greene AU - R. Bartlett BT - Physical Review Letters DA - Jan-07-1993 DO - 10.1103/PhysRevLett.71.201 PY - 1993 SP - 201 EP - 201 T2 - Physical Review Letters TI - Comment on \textquoteleft\textquoteleftMeasurement of the ratio of double-to-single photoionization of helium at 2.8 keV using synchrotron radiation\textquoteright\textquoteright VL - 71 SN - 0031-9007 ER -