diff --git a/.gitignore b/.gitignore
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--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,4 @@
 .obsidian/workspace.json
-.obsidian/mobile-workspace.json
+.obsidian/workspace-mobile.json
 .obsidian/plugins/recent-files-obsidian/data.json
 /.obsidian/plugins/novel-word-count/data.json
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diff --git a/game-theory.md b/game-theory.md
index 8e3cf7b..502a34f 100644
--- a/game-theory.md
+++ b/game-theory.md
@@ -1,3 +1,9 @@
+---
+id:
+aliases: []
+tags: []
+title: Game Theory
+---
 # Game Theory
 
 ## Domains
@@ -56,4 +62,4 @@ bid prices are hidden from the bidders.
 
 ### Ultimatum Game
 
-### Dictator Game
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+### Dictator Game
diff --git a/portfolio-theory-for-construction-estimating.md b/portfolio-theory-for-construction-estimating.md
index 6651368..92aeff6 100644
--- a/portfolio-theory-for-construction-estimating.md
+++ b/portfolio-theory-for-construction-estimating.md
@@ -9,3 +9,23 @@ title: Portfolio Theory for Construction Estimating
 Projects are like investments in that they have a cost and return.
 They are different in that, in the case of construction,
 the return is known, but the cost must be estimated.
+
+## Terms
+
+https://en.wikipedia.org/wiki/Discounted_cash_flow
+
+https://en.wikipedia.org/wiki/Valuation_(finance)
+
+https://en.wikipedia.org/wiki/Time_value_of_money
+
+https://en.wikipedia.org/wiki/Time_preference
+
+## Resources
+
+https://www.wiley.com/en-us/Wiley+Series+in+Probability+and+Statistics-c-1345
+
+https://www.wiley.com/en-us/Structural+Equation+Modeling%3A+Applications+Using+Mplus%2C+2nd+Edition-p-00045072
+
+https://www.wiley.com/en-us/Game-Theoretic+Foundations+for+Probability+and+Finance+-p-00027121
+
+https://www.wiley.com/en-us/Loss+Models%3A+From+Data+to+Decisions%2C+5th+Edition-p-00014549
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