diff --git a/compression.bib b/compression.bib
index b6004e7..96adb9d 100644
--- a/compression.bib
+++ b/compression.bib
@@ -43,6 +43,13 @@
   url = "https://en.wikipedia.org/w/index.php?title=Arithmetic_coding&oldid=1320999535",
   note = "[Online; accessed 26-November-2025]"
 }
+@misc{ enwiki:kraft-mcmillan,
+  author = "{Wikipedia contributors}",
+  title = "Kraft–McMillan inequality --- {Wikipedia}{,} The Free Encyclopedia",
+  year = "2025",
+  url = "https://en.wikipedia.org/w/index.php?title=Kraft%E2%80%93McMillan_inequality&oldid=1313803157",
+  note = "[Online; accessed 26-November-2025]"
+}
 @misc{ dewiki:shannon-fano,
  author = "Wikipedia",
  title = "Shannon-Fano-Kodierung --- Wikipedia{,} die freie Enzyklopädie",
@@ -64,3 +71,10 @@
  url = "https://de.wikipedia.org/w/index.php?title=Lempel-Ziv-Welch-Algorithmus&oldid=251943809",
  note = "[Online; Stand 26. November 2025]"
 }
+@misc{ dewiki:kraft-mcmillan,
+ author = "Wikipedia",
+ title = "Kraft-Ungleichung --- Wikipedia{,} die freie Enzyklopädie",
+ year = "2018",
+ url = "https://de.wikipedia.org/w/index.php?title=Kraft-Ungleichung&oldid=172862410",
+ note = "[Online; Stand 26. November 2025]"
+}
\ No newline at end of file
diff --git a/compression.tex b/compression.tex
index de18f21..0a55c9a 100644
--- a/compression.tex
+++ b/compression.tex
@@ -1,28 +1,30 @@
 \documentclass{article}
+%%% basic layouting
 \usepackage[utf8x]{inputenc}
 \usepackage[margin=1in]{geometry} % Adjust margins
 \usepackage{caption}
+\usepackage{hyperref}
+\PassOptionsToPackage{hyphens}{url} % allow breaking urls
+\usepackage{float}
 \usepackage{wrapfig}
 \usepackage{subcaption}
 \usepackage{parskip} % dont indent after paragraphs, figures
 \usepackage{xcolor}
+%%% algorithms
 \usepackage{algorithm}
 \usepackage{algpseudocodex}
-%\usepackage{csquotes} % Recommended for biblatex
+% graphs and plots
 \usepackage{tikz}
 \usepackage{pgfplots}
 \usetikzlibrary{positioning}
 %\usegdlibrary{trees}
-\usepackage{float}
+%%% math
 \usepackage{amsmath}
-\PassOptionsToPackage{hyphens}{url}
-\usepackage{hyperref} % allows urls to follow line breaks of text
+%%% citations
 \usepackage[style=ieee, backend=biber, maxnames=1, minnames=1]{biblatex}
+%\usepackage{csquotes} % Recommended for biblatex
 \addbibresource{compression.bib}
 
-
-
-
 \title{Compression}
 \author{Erik Neller}
 \date{\today}
@@ -55,8 +57,7 @@ This is an intuitive approach as more frequent symbols have a higher impact on a
 
 
 \section{Kraft-McMillan inequality}
-% https://de.wikipedia.org/wiki/Kraft-Ungleichung
-% https://en.wikipedia.org/wiki/Kraft%E2%80%93McMillan_inequality
+
 \section{Shannon-Fano}
 Shannon-Fano coding is one of the earliest methods for constructing prefix codes.
 It divides symbols into groups based on their probabilities, recursively partitioning them to assign shorter codewords