diff --git a/src/references.gmo b/src/references.gmo
index 1614ad6..e7e4306 100644
--- a/src/references.gmo
+++ b/src/references.gmo
@@ -4,16 +4,23 @@ a list of external resources that inspire and/or inform our work.
 
 see also our {bookmarks} for friends' sites and capsules.
 
-# computing within limits
+# permacomputing / computing within limits
 
 references related to {permacomputing}
 
+## from viznut
 => http://viznut.fi/texts-en/permacomputing.html permacomputing | viznut
 => http://viznut.fi/texts-en/permacomputing_update_2021.html permacomputing update 2021 | viznut
-=> https://wimvanderbauwhede.github.io/articles/frugal-computing/ frugal computing - Wim Vanderbauwhede
-=> https://computingwithinlimits.org/2021/papers/limits21-devalk.pdf Marloes de Valk: A pluriverse of local worlds: a review of Computing within Limits related terminology and practices
 => http://viznut.fi/texts-en/digital_esthetics.html Digital esthetics, environmental change and the subcultures of computer art | viznut
 
+## more concepts 
+
+=> https://computingwithinlimits.org/ LIMITS Workshop on Computing Within Limits
+=> https://wimvanderbauwhede.github.io/articles/frugal-computing/ Frugal Computing - Wim Vanderbauwhede
+=> https://computingwithinlimits.org/2021/papers/limits21-devalk.pdf Marloes de Valk: A pluriverse of local worlds: a review of Computing within Limits related terminology and practices
+=> http://go-dh.github.io/mincomp/about/ Minimal computing
+=> https://dukespace.lib.duke.edu/dspace/handle/10161/14457 Digital Environmental Metabolisms: An Ecocritical Project of the Digital Environmental Humanities 
+
 ## from xxiivv
 
 => https://wiki.xxiivv.com/site/collapse_computing.html XXIIVV - collapse informatics