diff --git a/README b/README
index 8c744fd..9f1865f 100644
--- a/README
+++ b/README
@@ -1,3 +1,6 @@
+- (sourced from https://tipok.org.ua/downloads/media/aacplus/libaacplus/libaacplus-2.0.2.tar.gz)
+- (compiles with ./autogen.sh --with-fftw3 --with-parameter-expansion-string-replace-capable-shell=/bin/bash)
+
 3GPP AAC+ High Efficiency Advanced Audio Codec v2 (HE-AAC+) Encoder Shared Library
 
 3GPP released reference implementation of 3GPP AAC Advanced Audio -