diff --git a/README.md b/README.md
index 1880912..f5ae233 100644
--- a/README.md
+++ b/README.md
@@ -134,7 +134,7 @@ Here's a list of good books:
 * SourceMaking's [Design Patterns](https://sourcemaking.com/design_patterns) seems to be a good web resource too.
 * O'Reilly's [How to make mistakes in Python](http://www.oreilly.com/programming/free/files/how-to-make-mistakes-in-python.pdf)
 * [101 Design Patterns & Tips for Developers](https://sourcemaking.com/design-patterns-and-tips)
-* [Python Design Patterns: For Sleek And Fashionable Code](https://www.toptal.com/python/python-design-patterns): a pretty simple introduction to common design patterns (Facade, Adapter, Decorator). [A more complete list of design patterns implementation in Python on Github](https://github.com/faif/python-patterns). [Also a book here](http://python-3-patterns-idioms-test.readthedocs.io/en/latest/PatternConcept.html).
+* [Python Design Patterns: For Sleek And Fashionable Code](https://www.toptal.com/python/python-design-patterns): a pretty simple introduction to common design patterns (Facade, Adapter, Decorator). A more complete list of design patterns implementation in Python on [Github](https://github.com/faif/python-patterns). [Also a book here](http://python-3-patterns-idioms-test.readthedocs.io/en/latest/PatternConcept.html).
 
 I maintain a [list of antipatterns](https://github.com/charlax/antipatterns) on another repo. This is a highly recommended read.
 
@@ -280,6 +280,8 @@ Resources
 
 ## Concepts
 
+[Glossary](glossary.md)
+
 * [DDD](https://en.wikipedia.org/wiki/Domain-driven_design)
 * [TDD](https://en.wikipedia.org/wiki/Test-driven_development)
 * [BDD](https://en.wikipedia.org/wiki/Behavior-driven_development)
diff --git a/glossary.md b/glossary.md
index fc63521..2097208 100644
--- a/glossary.md
+++ b/glossary.md
@@ -11,4 +11,5 @@
 * **Blackbox monitoring**
 * **Stability** is the sensitivity to change of a given system that is the negative impact that may be caused by system changes ([ISO/IEC 9126 standard on evaluating software quality](https://en.wikipedia.org/wiki/ISO/IEC_9126)).
 * **Reliability** is made of maturity (frequency of failure in software), fault tolerance (ability to withstand failure) and recoverability (ability to bring back a failed system to full operation) ([ISO/IEC 9126 standard on evaluating software quality](https://en.wikipedia.org/wiki/ISO/IEC_9126)).
-* **Whitebox monitoring**
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+* **Whitebox monitoring**
+* **Law of Demeter**: ([source]([Law of Demeter](http://www.ccs.neu.edu/home/lieber/LoD.html)))
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