diff --git a/AUTHORS b/AUTHORS
index c451cdc..dfba82c 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -1 +1,2 @@
 Steffen Vogel <post@steffenvogel.de>
+Arnold Barmettler <barmettler@astronomie.info> (http://lexikon.astronomie.info/zeitgleichung/neu.html)
diff --git a/COPYING b/COPYING
new file mode 120000
index 0000000..6168a39
--- /dev/null
+++ b/COPYING
@@ -0,0 +1 @@
+/usr/share/automake-1.11/COPYING
\ No newline at end of file
diff --git a/README b/README
index 2805968..454a8d1 100644
--- a/README
+++ b/README
@@ -1 +1,2 @@
-libastro is a collection of functions for time, date and ephemeris calculus
+sun calculates the sun's rise/set times, the solar noon and the daylight time duration
+