diff --git a/main.tex b/main.tex
index 342adf2..43aba37 100644
--- a/main.tex
+++ b/main.tex
@@ -28,6 +28,10 @@
 \usepackage{cite}                   % citation for bibliography
 \usepackage{amssymb}                % provides enhancements for mathematical formulas
 % \usepackage[utf8]{inputenc}         % load files via \input as UTF-8, enabled by default since 2018
+\usepackage{pgfplots}               % visualization tool ideal for creating scientific/technical graphics
+\usepackage{float}                  % extra option to place tables, figures etc.
+\usepackage{amsmath}                % better layout strategies for compliacted/larger equations
+\usepackage{multicol}               % multi column page layouts
 
 \makeindex
 \makenomenclature
@@ -79,7 +83,7 @@
     % include all used chapters
     \input{config/chapter.tex}
 
-    
+
 
     % source references follow content of article
     \input{pages/page-09-bibliography}