diff --git a/AUTHORS.md b/AUTHORS.md
index c1e5ce2cf435533b53670d35da87be516dafc4d7..49fcd18cb415ec8c02a659e5729479fcb6e5a900 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -4,8 +4,10 @@ The following people contributed to making of these lecture notes:
 * Bas Nijholt
 * Iacopo Bertelli
 * Joana Fraxanet Morales
+* Kevin Choi
 * Piotr Benedysiuk
 * Sander Otte
+* Sathish Kumar RK
 * Toeno van der Sar
 
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diff --git a/src/8_many_atoms.md b/src/8_many_atoms.md
index 71375c4b2ea9e8df35bddc6d624f563a11e1e9e3..9b724d39d086c0e370d10f3a8ff3d9704b906874 100644
--- a/src/8_many_atoms.md
+++ b/src/8_many_atoms.md
@@ -17,7 +17,7 @@ pi = np.pi
 
     After this lecture you will be able to:
 
-    - formulate equations of motion for electrons or phonons in 1D, for systems with multiple degrees of freedom per unit cell.
+    - formulate equations of motion for electrons or phonons in 1D, with multiple degrees of freedom per unit cell.
     - solve these equations to arrive at the dispersion relation.
     - derive the group velocity, effective mass, and density of states.
     - explain what happens with the band structure when the periodicity of the lattice is increased or reduced.