TY - JOUR AU - Wesley Brittin AU - W. Chappell BT - Journal of Mathematical Physics DA - Jan-01-1969 DO - 10.1063/1.1664892 PY - 1969 EP - 661 T2 - Journal of Mathematical Physics TI - Functional Methods in Statistical Mechanics. I. Classical Theory VL - 10 SN - 00222488 ER -