diff --git a/free-programming-books-fr.md b/free-programming-books-fr.md
index 36012475..c52d25fa 100644
--- a/free-programming-books-fr.md
+++ b/free-programming-books-fr.md
@@ -41,7 +41,6 @@
 ###Non dépendant du langage
 ####Algorithmique
 * [Algorithmique](http://pauillac.inria.fr/~quercia/cdrom/cours), par Michel Quercia
-* [Éléments d'algorithmique](https://www.rocq.inria.fr/secret/Matthieu.Finiasz/teaching/ENSTA/IN101%20-%20poly%20algo.pdf) par Françoise Levy-dit-Vehel et Matthieu Finiasz
 * [Éléments d'algorithmique](http://www-igm.univ-mlv.fr/~berstel/Elements/Elements.pdf) par D. Beauquier, J. Berstel, et Ph. Chrétienne
 * [France-IOI](http://www.france-ioi.org/)
 * [Prologin](http://www.prologin.org/)
@@ -88,7 +87,6 @@
 * [Le C en 20 heures](http://framabook.org/6-le-c-en-20-heures/), par Eric Berthomier et Daniel Schang
 * [Initiation à la programmation (en C++)](https://www.coursera.org/course/intro-cpp-fr), MOOC de l'École Polytechnique Fédérale de Lausanne
 * [Introduction à la rétro-ingénierie de binaires](http://progdupeu.pl/articles/45/introduction-a-la-retro-ingenierie-de-binaires), à partir de code C compilé pour x86.
-* [Programmation en C](https://www.rocq.inria.fr/secret/Matthieu.Finiasz/teaching/ENSTA/IN101%20-%20poly%20C.pdf) par Pierre-Alain Fouque et David Pointcheval
 
 
 ###Coq
diff --git a/free-programming-books.md b/free-programming-books.md
index 543825b4..8a24d8aa 100644
--- a/free-programming-books.md
+++ b/free-programming-books.md
@@ -262,7 +262,6 @@
 * [Compiling Scala for the Java Virtual Machine](http://lampwww.epfl.ch/~schinz/thesis-final-A4.pdf) - Michel Schinz
 * [Implementing Functional Languages: A Tutorial](http://research.microsoft.com/en-us/um/people/simonpj/Papers/pj-lester-book/) - Simon Peyton Jones, David Lester
 * [Let's Build a Compiler](http://www.stack.nl/~marcov/compiler.pdf) (PDF)
-* [Linkers and loaders](http://www.iecc.com/linker/)
 * [Practical and Theoretical Aspects of Compiler Construction](http://www.stanford.edu/class/archive/cs/cs143/cs143.1128/) (class lectures and slides)
 
 
@@ -543,7 +542,6 @@
 
 ###Ada
 * [A Guide to Ada for C and C++ Programmers](http://www.cs.uni.edu/~mccormic/4740/guide-c2ada.pdf) (PDF)
-* [Ada 95: The Craft of Object-Oriented Programming](http://faculty.cs.wwu.edu/reedyc/AdaResources/bookhtml/contents.htm)
 * [Ada Distilled](http://www.adapower.com/pdfs/AdaDistilled07-27-2003.pdf) (PDF)
 * [Ada for Software Engineers](http://pnyf.inf.elte.hu/kto/oktatas/ada/books/ase.pdf) (PDF)
 * [The Big Online Book of Linux Ada Programming](http://www.pegasoft.ca/resources/boblap/book.html)
@@ -621,7 +619,6 @@
 * [BASH Programming- Mike G mikkey](http://tldp.org/HOWTO/Bash-Prog-Intro-HOWTO.html)
 * [Getting Started with BASH](http://www.hypexr.org/bash_tutorial.php)
 * [Google Shell Style Guide](http://google-styleguide.googlecode.com/svn/trunk/shell.xml)
-* [Learning the bash Shell](http://www.redbrick.dcu.ie/~teapott/MECS/Notes/learning_bash.pdf)
 * [Lhunath's Bash Guide](http://mywiki.wooledge.org/BashGuide)
 * [The Command Line Crash Course](http://learncodethehardway.org/cli/book/) (also a Powershell reference)
 * [Conquering the Command Line](http://conqueringthecommandline.com/book/frontmatter) - Mark Bates
@@ -1041,7 +1038,6 @@ See also [TeX](#tex)
 * [Getting Started with Ubuntu](http://ubuntu-manual.org/)
 * [GNU Autoconf, Automake and Libtool](http://sources.redhat.com/autobook/download.html)
 * [GTK+/Gnome Application Development](http://www.linuxtopia.org/online_books/gui_toolkit_guides/gtk+_gnome_application_development/index.html)
-* [Learn Linux The Hard Way](http://nixsrv.com/llthw)
 * [Learning Debian GNU/Linux](http://oreilly.com/openbook/debian/book/index.html)
 * [Linux Administrator's Security Guide](http://www.linuxtopia.org/online_books/linux_administrators_security_guide/index.html)
 * [Linux Advanced Routing & Traffic Control HOWTO](http://lartc.org/)
@@ -1432,7 +1428,6 @@ See also [TeX](#tex)
 * [A community-driven Ruby style guide](https://github.com/bbatsov/ruby-style-guide)
 * [CodeCademy Ruby](http://www.codecademy.com/tracks/ruby)
 * [How To Think Like a Computer Scientist: Learning With Ruby](http://mysite.verizon.net/hpassel/thinkruby/)
-* [I Love Ruby](http://goo.gl/FW6slH)
 * [Just Enough Ruby to Get By](http://dmtri.com/posts/65)
 * [Learn Ruby the hard way](http://ruby.learncodethehardway.org/book/)
 * [Learn to Program, by Chris Pine](http://pine.fm/LearnToProgram/)