000 00304nam a2200109Ia 4500
008 201121s9999 xx 000 0 und d
100 _aOfford,A.. Ard. Ingletion,A.W.
245 0 _aProceeding Of The Londan Mathematical Society
260 _boxford: At The Clarenden Press
300 _c512
942 _cBV
999 _c16415
_d16415