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*008120411s2012    xx#           000 0 nob
*019  $bk
*08230$a515.2
*100  $aKirfel, Christoph$4aut$_129773100
*245  $aÅ bevise med ord
*300  $aS. 47, 52
*650  $aRekker$2norart$_22509100
*650  $amatematisk$aanalyse$2norart$_14590100
*773  $tTangenten$gÅrg. 23, nr. 1 (2012)$x0802-8192$w(NO-LaBS)552650(tnr)
*999  $z1200510592$anorart:1200510592
^