diff --git a/air_viscosity.m b/air_viscosity.m
index 3f355c9..4c3c993 100644
--- a/air_viscosity.m
+++ b/air_viscosity.m
@@ -1,3 +1,9 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function mm = air_viscosity(t)
 % Sutherland's formula (Crane, 1988)
 % http://jullio.pe.kr/fluent6.1/help/html/ug/node294.htm
diff --git a/design_point.m b/design_point.m
index 498352b..cc66cae 100644
--- a/design_point.m
+++ b/design_point.m
@@ -1,3 +1,9 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function [propulsion, performance] = design_point(mission, propulsion, performance, constants)
 
 wl = 0:10:10000;
diff --git a/drag_buildup.m b/drag_buildup.m
index 217fef1..ddf84a1 100644
--- a/drag_buildup.m
+++ b/drag_buildup.m
@@ -1,3 +1,9 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function performance = drag_buildup(performance, aircraft)
 
 performance.c_d0 = 0;
diff --git a/estimate_mf_prop.m b/estimate_mf_prop.m
index d5e242b..a25c58f 100644
--- a/estimate_mf_prop.m
+++ b/estimate_mf_prop.m
@@ -1,3 +1,9 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function mf_prop = estimate_mf_prop(f_install, pw_to, pw_ice, pw_gen, pw_em, pw_prop, config)
 % f_install: Factor that accounts for all auxiliary systems for propulsion (> 1)
 % pw_to: Shaft power to MTOW ratio
diff --git a/estimate_mf_subs.m b/estimate_mf_subs.m
index b4ef314..b5d8a34 100644
--- a/estimate_mf_subs.m
+++ b/estimate_mf_subs.m
@@ -1,3 +1,9 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function mf_subs = estimate_mf_subs(mf_prop, mf_struct)
 
 mf_subs = 3 / 7 * (mf_prop + mf_struct);
diff --git a/friction_coeff.m b/friction_coeff.m
index a976dbd..025a69a 100644
--- a/friction_coeff.m
+++ b/friction_coeff.m
@@ -1,5 +1,12 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function cf = friction_coeff(x, v, a, rr, mm)
-re = reynolds(x, v, rr, mm);
+
+    re = reynolds(x, v, rr, mm);
 if is_laminar(re)
     cf = 1.328 / sqrt(re);
 else
diff --git a/fuselage.m b/fuselage.m
index df7f622..1b6128f 100644
--- a/fuselage.m
+++ b/fuselage.m
@@ -1,3 +1,9 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function aircraft = fuselage(aircraft, segment)
 
 % Iterate over aircraft lifting surfaces
diff --git a/lifting_surface.m b/lifting_surface.m
index 002e737..3b9f1fd 100644
--- a/lifting_surface.m
+++ b/lifting_surface.m
@@ -1,3 +1,9 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function aircraft = lifting_surface(aircraft, segment)
 
 m = segment.v / segment.speed_sound;
diff --git a/main.m b/main.m
index adf3fe4..4192ce0 100644
--- a/main.m
+++ b/main.m
@@ -1,6 +1,8 @@
 % Aircraft design tool
 %
 % Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
 
 close all;
 
diff --git a/mtow.m b/mtow.m
index 70c8c16..5261e33 100644
--- a/mtow.m
+++ b/mtow.m
@@ -1,3 +1,9 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function mission = mtow(mission, propulsion, energy, performance, constants)
 
 % Initialize mission parameters
diff --git a/plot_mission.m b/plot_mission.m
index 07a287b..786bdc4 100644
--- a/plot_mission.m
+++ b/plot_mission.m
@@ -1,3 +1,9 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function plot_mission(mission)
 
 x = 0;
diff --git a/reynolds.m b/reynolds.m
index f850bbd..2005447 100644
--- a/reynolds.m
+++ b/reynolds.m
@@ -1,2 +1,9 @@
+% Aircraft design tool
+%
+% Mario Bras (mbras@uvic.ca) and Ricardo Marques (ricardoemarques@uvic.ca) 2019
+%
+% This file is subject to the license terms in the LICENSE file included in this distribution
+
 function r = reynolds(x, v, rr, mm)
-r = rr * v * x / mm;
+
+    r = rr * v * x / mm;