LEADER 01051nam a2200325 i 4500
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008 970308s1967    de            ||| | eng  
035   $ab10192438-39ule_inst
035   $aLE00644390$9ExL
040   $aDip.to Fisica$bita
084   $a510.20
084   $a510.46
084   $a510.47
084   $a517'.5
084   $aQA322
100 1 $aButzer, Paul Leo$047954
245 10$aSemi-groups of operators and approximation /$cP.L. Butzer and H. Berens
260   $aBerlin :$bSpringer-Verlag,$c1967
300   $axi, 318 p. ;$c24 cm.
650  4$aApproximation theory
650  4$aIntegrals
650  4$aSemi-groups
700 1 $aBerens, Hubert
907   $a.b10192438$b21-09-06$c27-06-02
912   $a991001235549707536
945   $aLE006 510.46+510.47 BUT$g1$i2006000022132$lle006$o-$pE0.00$q-$rl$s-  $t0$u0$v0$w0$x0$y.i10237434$z27-06-02
996   $aSemi-groups of operators and approximation$9191558
997   $aUNISALENTO
998   $ale006$b01-01-97$cm$da  $e-$feng$gde $h0$i1