diff --git a/src/permacomputing.gmo b/src/permacomputing.gmo
index e14d3fc..5b7e53f 100644
--- a/src/permacomputing.gmo
+++ b/src/permacomputing.gmo
@@ -50,3 +50,24 @@ some quotes from the articles by viznut
 > There are countless ways, most of them still undiscovered, to make low and moderate data complexities look good — sometimes good enough that increased resolution would no longer improve them. Even compression artifacts might look so pleasant that people would actually prefer to have them.
 
 > For extreme realism, perfection, detail and sharpness, people would prefer to look at nature.
+
+# related concepts
+
+more projects and resources related with permacomputing:
+
+=> http://viznut.fi/texts-en/permacomputing_update_2021.html permacomputing update 2021 | viznut
+
+## salvage computing
+
+=> gemini://zaibatsu.circumlunar.space/~solderpunk/phlog/discussions-toward-radically-sustainable-computing.txt Discussions toward radically sustainable computing - solderpunk
+=> gemini://zaibatsu.circumlunar.space/~solderpunk/phlog/the-standard-salvaged-computing-platform.txt the standard salvage computing platform - solderpunk
+
+## longtermism
+
+=> https://wiki.xxiivv.com/site/longtermism.html XXIIVV - longtermism
+
+## frugal computing
+
+=> https://wimvanderbauwhede.github.io/articles/frugal-computing/ frugal computing - Wim Vanderbauwhede
+
+see also {references}
diff --git a/src/references.gmo b/src/references.gmo
index 3831650..e14091c 100644
--- a/src/references.gmo
+++ b/src/references.gmo
@@ -10,14 +10,28 @@ references related to {permacomputing}
 
 => 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 
+=> 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
-=> https://wiki.xxiivv.com/site/collapse_computing.html collapse informatics
+
+## from xxiivv
+
+=> https://wiki.xxiivv.com/site/collapse_computing.html XXIIVV - collapse informatics
+=> https://wiki.xxiivv.com/site/permacomputing.html XXIIVV - permacomputing
+=> https://wiki.xxiivv.com/site/longtermism.html XXIIVV - longtermism
+
+## from low tech magazine
 
 => https://solar.lowtechmagazine.com/2020/12/how-and-why-i-stopped-buying-new-laptops.html How and why I stopped buying new laptops - low tech magazine
 => https://solar.lowtechmagazine.com/es/2018/10/bedazzled-by-energy-efficiency.html Deslumbrados por la Eficiencia Energética - low tech magazine
 => https://solar.lowtechmagazine.com/2009/06/embodied-energy-of-digital-technology.html The monster footprint of digital technology - low tech magazine
 
+## in gemini
+
+texts by solderpunk in the {gemini} protocol
+
+=> gemini://zaibatsu.circumlunar.space/~solderpunk/phlog/discussions-toward-radically-sustainable-computing.txt Discussions toward radically sustainable computing - solderpunk
+=> gemini://zaibatsu.circumlunar.space/~solderpunk/phlog/the-standard-salvaged-computing-platform.txt the standard salvage computing platform - solderpunk
+
 ## art projects
 
 => https://www.youtube.com/watch?v=YMKJ7S7fKOk Rare Earthenware - Unknown Fields