▁July ▁ 3 1 , ▁ 2 0 1 9 . ▁ ▁Work ▁ ▁In ▁ 1 9 5 2 ▁François ▁came ▁in ▁contact ▁with ▁cy ber net ics ▁through ▁Nor bert ▁Wiener ' s ▁Cy ber net ics . ▁In ▁ 1 9 5 8 ▁he ▁joined ▁the ▁Society ▁for ▁General ▁Systems ▁Research ▁now ▁the ▁International ▁Society ▁for ▁the ▁Systems ▁Sciences . ▁Since ▁ 1 9 7 0 , ▁François ▁has ▁participated ▁in ▁numerous ▁meet ings ▁of ▁various ▁systems ▁and ▁cy ber net ics ▁soci eties . ▁▁ ▁Many ▁courses ▁and ▁sem in ars ▁on ▁system ics ▁and ▁cy ber net ics ▁were ▁given ▁by ▁Charles ▁François ▁in ▁Argentina ▁and ▁also ▁in ▁Perú ▁at ▁the ▁I AS ; ▁the ▁last ▁edition ▁of ▁them ▁is ▁his ▁" Cur so ▁de ▁Te or ía ▁General ▁de ▁S ist emas ▁y ▁Ci bern ética ▁con ▁represent aciones ▁gr á f icas ", ▁a ▁CD - ROM ▁disk ▁with ▁more ▁than ▁ 2 8 0 ▁draw ings ▁edited ▁by ▁Group ▁for ▁the ▁Study ▁of ▁Integr ated ▁Systems ▁in ▁ 2 0 0 7 , ▁also ▁in ▁English . ▁ ▁Publications ▁ ▁Cont ribution s ▁in ▁books : ▁▁ 1 9 7 6 , ▁Cy bern étique ▁et ▁Pro s pective , ▁Nam ur : ▁International ▁Association ▁of ▁Cy ber net ics , ▁ 1 9 7 6 . ▁▁▁ 1 9 7 8 , ▁Int rodu cción ▁à ▁la ▁Pro spect iva ▁Buenos ▁Aires : ▁Ple amar , ▁▁ 1 9 7 8 . ▁▁▁ 1