diff --git a/ecdh.h b/ecdh.h
index a4aa11e..3970f06 100644
--- a/ecdh.h
+++ b/ecdh.h
@@ -21,7 +21,7 @@
       K-409     sect409k1     192 bit
       B-409     sect409r1     192 bit
       K-571     sect571k1     256 bit
-      B-571     sect571r1     256 bit
+      B-571     sect571r1
 
 
 
@@ -31,18 +31,9 @@
     http://csrc.nist.gov/publications/fips/fips186-3/fips_186-3.pdf
 
 
-  NIST Test Vectors from:
-
-    http://point-at-infinity.org/ecc/nisttv
-    https://csrc.nist.gov/CSRC/media/Projects/Cryptographic-Standards-and-Guidelines/documents/examples/ECDSA_Characteristic2.pdf
-
-
-  References:
+  Reference:
 
     https://www.ietf.org/rfc/rfc4492.txt 
-    http://www.ecrypt.eu.org/ecrypt2/documents/D.SPA.20.pdf
-    https://www.ipa.go.jp/security/enc/CRYPTREC/fy15/doc/1029_report.pdf
-
 */
 
 #ifndef _ECC_H__