*0011627675 *008940329s1993 xx# 000 0 eng *019 $bk *08230$a006 *100 $aLudvigsen, Børre$_164001700 *245 $aAltruism and benefit in Cyperspace *300 $aS. 13-18 : ill. *773 $tTelektronikk$gÅrg. 89, nr 4 (1993)$x0085-7130$w(NO-LaBS)537526(tnr) *999 $z9400171714$anorart:9400171714 ^