https://slowforward.net/2010/09/17/note-sul-concetto-di-installance-marco-giovenale-2010/ = https://slowforward.net/2013/09/05/note-sul-concetto-di-installance/
un annuncio triplo per slowforward: differx + differx.it + xdiffer + installance
https://it.scribd.com/doc/192102986/Le-tracce-piccole-le-tracce-minori