diff --git a/README.rst b/README.rst
index 3034313..d1204c8 100644
--- a/README.rst
+++ b/README.rst
@@ -13,11 +13,11 @@ This is a work in progress. Some features may not be available.
* Password / passphrase authentication
- ✓ no character-set limitation
- - ✓ reasonable lenth limit ([security vs. DOS](http://arstechnica.com/security/2013/09/long-passwords-are-good-but-too-much-length-can-be-bad-for-security/))
+ - ✓ reasonable lenth limit (`security vs. DOS `_
- ✓ strong, evolutive and retro-compatible password hashing functions
- ✓ optional NIST Special Publication 800-63B compatibility
-* HOTP - HMAC-based One-time Password Algorithm ([OATH](http://www.openauthentication.org/) - [RFC 4226](https://tools.ietf.org/html/rfc4226))
+* HOTP - HMAC-based One-time Password Algorithm (`OATH `_ - `RFC 4226 `_)
- ✗ the key can be passed as bytes, an ASCII string, an hexadicimal string or a base32 string
- ✗ customizable counter
@@ -25,7 +25,7 @@ This is a work in progress. Some features may not be available.
- ✗ customizable output length
- ✗ customizable output alphabet
-* TOTP - Time-based One-time Password Algorithm ([OATH](http://www.openauthentication.org/) - [RFC 6238](https://tools.ietf.org/html/rfc6238))
+* TOTP - Time-based One-time Password Algorithm (`OATH `_ - `RFC 6238 `_)
- ✗ the key can be passed as bytes, an ASCII string, an hexadicimal string or a base32 string
- ✗ customizable timestamp