diff --git a/ML1_01_intro.Rmd b/ML1_01_intro.Rmd
index 71a98fe..a727a75 100644
--- a/ML1_01_intro.Rmd
+++ b/ML1_01_intro.Rmd
@@ -1,10 +1,8 @@
 ---
 title: "ML 01 Introduction"
 output:
-  pdf_document:
+  bookdown::pdf_document2:
     number_section: yes
-  html_notebook:
-    number_sections: yes
 toc: false
 classoption: fleqn
 ---
diff --git a/ML1_01_intro.pdf b/ML1_01_intro.pdf
index 1c33c5a..d59d1de 100644
Binary files a/ML1_01_intro.pdf and b/ML1_01_intro.pdf differ
diff --git a/ML1_02_moindres_carres.Rmd b/ML1_02_moindres_carres.Rmd
index 03e93a9..ce2a8f2 100644
--- a/ML1_02_moindres_carres.Rmd
+++ b/ML1_02_moindres_carres.Rmd
@@ -1,10 +1,8 @@
 ---
 title: "ML 02 Méthode des moindres carrés"
 output:
-  pdf_document:
+  bookdown::pdf_document2:
     number_section: yes
-  html_notebook:
-    number_sections: yes
 toc: false
 classoption: fleqn
 ---
diff --git a/ML1_03_tikhonov.Rmd b/ML1_03_tikhonov.Rmd
index d2ea66b..fb9ba12 100644
--- a/ML1_03_tikhonov.Rmd
+++ b/ML1_03_tikhonov.Rmd
@@ -1,10 +1,8 @@
 ---
 title: "ML 03 Régularisation de Tikhonov"
 output:
-  pdf_document:
+  bookdown::pdf_document2:
     number_section: yes
-  html_notebook:
-    number_sections: yes
 toc: false
 classoption: fleqn
 ---
diff --git a/ML1_04_validation_croisee.Rmd b/ML1_04_validation_croisee.Rmd
index 59526d7..c7073d6 100644
--- a/ML1_04_validation_croisee.Rmd
+++ b/ML1_04_validation_croisee.Rmd
@@ -1,10 +1,8 @@
 ---
 title: "ML 04 Validation croisée"
 output:
-  pdf_document:
+  bookdown::pdf_document2:
     number_section: yes
-  html_notebook:
-    number_sections: yes
 toc: false
 classoption: fleqn
 ---
diff --git a/ML1_05_presentation_svd.Rmd b/ML1_05_presentation_svd.Rmd
index 1426bd0..1b701fc 100644
--- a/ML1_05_presentation_svd.Rmd
+++ b/ML1_05_presentation_svd.Rmd
@@ -1,10 +1,8 @@
 ---
 title: "ML 05 Présentation de la décomposition en valeurs singulières (SVD)"
 output:
-  pdf_document:
+  bookdown::pdf_document2:
     number_section: yes
-  html_notebook:
-    number_sections: yes
 toc: false
 classoption: fleqn
 ---
diff --git a/ML1_06_matrice_definie_non_negative.Rmd b/ML1_06_matrice_definie_non_negative.Rmd
index 7103487..82a732e 100644
--- a/ML1_06_matrice_definie_non_negative.Rmd
+++ b/ML1_06_matrice_definie_non_negative.Rmd
@@ -1,10 +1,8 @@
 ---
 title: "ML 06 Matrice définie non négative"
 output:
-  pdf_document:
+  bookdown::pdf_document2:
     number_section: yes
-  html_notebook:
-    number_sections: yes
 toc: false
 classoption: fleqn
 ---
diff --git a/ML1_07_multiplicateurs_de_lagrange.Rmd b/ML1_07_multiplicateurs_de_lagrange.Rmd
index c2cf6fe..4c02d3c 100644
--- a/ML1_07_multiplicateurs_de_lagrange.Rmd
+++ b/ML1_07_multiplicateurs_de_lagrange.Rmd
@@ -1,10 +1,8 @@
 ---
 title: "ML 07 Optimisation sous contraintes et multiplicateurs de Lagrange"
 output:
-  pdf_document:
+  bookdown::pdf_document2:
     number_section: yes
-  html_notebook:
-    number_sections: yes
 toc: false
 classoption: fleqn
 ---
diff --git a/ML1_08_derivation_svd.Rmd b/ML1_08_derivation_svd.Rmd
index c1c8227..d716d96 100644
--- a/ML1_08_derivation_svd.Rmd
+++ b/ML1_08_derivation_svd.Rmd
@@ -1,10 +1,8 @@
 ---
 title: "ML 08 Dérivation du SVD"
 output:
-  pdf_document:
+  bookdown::pdf_document2:
     number_section: yes
-  html_notebook:
-    number_sections: yes
 toc: false
 classoption: fleqn
 ---
diff --git a/ML1_09_puissance_iteree_valeur_propre.Rmd b/ML1_09_puissance_iteree_valeur_propre.Rmd
index 67dcd0f..208c9da 100644
--- a/ML1_09_puissance_iteree_valeur_propre.Rmd
+++ b/ML1_09_puissance_iteree_valeur_propre.Rmd
@@ -1,10 +1,8 @@
 ---
 title: "ML 09 Plus grande valeur propre et puissance itérée"
 output:
-  pdf_document:
+  bookdown::pdf_document2:
     number_section: yes
-  html_notebook:
-    number_sections: yes
 toc: false
 classoption: fleqn
 ---
diff --git a/ML1_10_puissance_iteree_svd.Rmd b/ML1_10_puissance_iteree_svd.Rmd
index 4b79305..db514ff 100644
--- a/ML1_10_puissance_iteree_svd.Rmd
+++ b/ML1_10_puissance_iteree_svd.Rmd
@@ -1,10 +1,8 @@
 ---
 title: "ML 10 Méthode de la puissance itérée et SVD"
 output:
-  pdf_document:
+  bookdown::pdf_document2:
     number_section: yes
-  html_notebook:
-    number_sections: yes
 toc: false
 classoption: fleqn
 ---