diff --git a/notsof.md b/notsof.md
index 4496a1b01..12fc77967 100644
--- a/notsof.md
+++ b/notsof.md
@@ -97,6 +97,6 @@
   - [[pearson correlation coefficient]] 
   - some correlations between probabilities are intrinsic, some are circumstantial
   - we call correlations [[causal]] when we understand the [rules](rules) that account for it; like e.g. thermodynamics as they affect materials
-- [[correlation matrix]]
-  - helps us define L
+- p111 [[correlation matrix]]
+  - helps us define L and thus settle on the G(M, L)
    
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