diff --git a/eff_Drop_DinDoutC.jl b/eff_Drop_DinDoutC.jl
index 1a3910e55cfe5efcebe92486375eb0fcfddbc8c0..f2d437bef23cfc19e6886ace61996b557b6be602 100644
--- a/eff_Drop_DinDoutC.jl
+++ b/eff_Drop_DinDoutC.jl
@@ -27,8 +27,9 @@ function solve_D(P,n,len,Δt,Tf,Di,Do,rNb,perc)
     
     #taking as input: P,n,length,Δt,Tf,Di,Do,rNb,perc
     Δx=len/(n-1)
-    αi = Di*Δt/Δx^2; αo = Do*Δt/Δx^2; #https://www.uni-muenster.de/imperia
-    #/md/content/physik_tp/lectures/ws2016-2017/num_methods_i/heat.pdf
+    # https://www.uni-muenster.de/imperia/md/content/physik_tp/
+    # lectures/ws2016-2017/num_methods_i/heat.pdf
+    αi = Di*Δt/Δx^2; αo = Do*Δt/Δx^2;
     
     xig=0-Δx
     xi=collect(LinRange(0,rNb*len,Int(rNb*(n-1)+1)))