TY - JOUR AU - J. Doll AU - William Reinhardt BT - The Journal of Chemical Physics DA - Jan-01-1975 DO - 10.1063/1.430656 PY - 1975 EP - 2003 T2 - The Journal of Chemical Physics TI - Analytical evaluation of 1-matrices, a generalization of the Kato perturbation technique VL - 62 SN - 00219606 ER -