...densities: E. Ferguson, The University of Texas, Austin...
Stark-broadening of Balmer lines at low electron densities: E. Ferguson, The University of Texas, Austin, Texas, and H. Schlüter, Max-Planck-Institut für Physik und Astrophysik, München, Germanydoi:10.1016/0003-4916(63)90140-4NoneELSEVIER...