TY - JOUR AU - David Hummer BT - Nuclear Instruments and Methods DA - Jan-07-1973 DO - 10.1016/0029-554X(73)90721-0 PY - 1973 EP - 421 T2 - Nuclear Instruments and Methods TI - Informal remarks on a problem in astrophysics VL - 110 SN - 0029554X ER -