TY - JOUR AU - David Hummer BT - Journal of Quantitative Spectroscopy and Radiative Transfer DA - Jan-09-1981 DO - 10.1016/0022-4073(81)90112-6 PY - 1981 SP - 187 EP - 195 T2 - Journal of Quantitative Spectroscopy and Radiative Transfer TI - Expressions for the computer-evaluation of the four kernel functions for line formation with Doppler and Lorentz profiles VL - 26 SN - 00224073 ER -