000 00443nam a2200169Ia 4500
001 41900
003 CONS
008 171214s9999 xx 000 0 eng d
041 0 _aeng
082 0 4 _a517.983
100 1 _aDonner K.
245 1 0 _aExtension of positive operators and Korovkin theorems.
_cDonner K.
260 _aBerlin
_bSpringer-Verlag
_c1982
300 _a182 p.
500 _aLecture Notes in Mathematics, Vol. 904
942 _2udc
_cBK
999 _c41543
_d41543