@article{892591, author = {Jonathan Baker and R Forrey and M Jeziorska and J Morgan}, title = {Bethe Logarithms for the 11S, 21S, and 23S States of Helium and Helium-like Ions}, year = {2008}, month = {2008-10-16 14:10:14}, publisher = {Physical Review Letters}, language = {en}, }