[19] OpenID Connect は、 OAuthログインに関する仕様です。
[1] Final: OpenID Connect Core 1.0 incorporating errata set 1 ( 版) http://openid.net/specs/openid-connect-core-1_0.html
[2] OpenID Connect (OAuth 2.0 for Login) - Google Accounts Authentication and Authorization — Google Developers ( 版) https://developers.google.com/accounts/docs/OpenIDConnect
[3] Final: OpenID Connect Dynamic Client Registration 1.0 incorporating errata set 1 ( 版) http://openid.net/specs/openid-connect-registration-1_0.html
[4] Draft: OpenID Connect Basic Client Implementer's Guide 1.0 - draft 36 ( 版) http://openid.net/specs/openid-connect-basic-1_0.html
[5] Draft: OpenID Connect Implicit Client Implementer's Guide 1.0 - draft 19 ( 版) http://openid.net/specs/openid-connect-implicit-1_0.html
[6] Draft: OpenID Connect Session Management 1.0 - draft 22 ( 版) http://openid.net/specs/openid-connect-session-1_0.html
[7] Final: OpenID Connect Discovery 1.0 incorporating errata set 1 ( 版) http://openid.net/specs/openid-connect-discovery-1_0.html
[9] OpenID Connect 1.0 ( 版) https://msdn.microsoft.com/en-us/library/azure/dn645541.aspx
[10] OpenID Connect | OpenID ( 版) http://openid.net/connect/
[11] draft: OpenID 2.0 to OpenID Connect Migration 1.0 - draft 08 ( 版) http://openid.net/specs/openid-connect-migration-1_0.html
[12] Google の実装は、>>11 とは異なる方法で OpenID 2.0 からの移行を実現しているようです。
[14] Specifications | OpenID () http://openid.net/developers/specs/
[15] People: getOpenIdConnect | Google+ Platform for Web | Google Developers ( ()) https://developers.google.com/+/web/api/rest/openidconnect/getOpenIdConnect
[16] OpenID Connect | Google Identity Platform | Google Developers ( ()) https://developers.google.com/identity/protocols/OpenIDConnect
[17] draft-bertola-dns-openid-pidi-architecture-00 - An Architecture for a Public Identity Infrastructure Based on DNS and OpenID Connect () https://tools.ietf.org/html/draft-bertola-dns-openid-pidi-architecture-00
[18] draft-sanz-openid-dns-discovery-00 - OpenID Connect DNS-based Discovery () https://tools.ietf.org/html/draft-sanz-openid-dns-discovery-00
[21] People: getOpenIdConnect | Google+ Platform for Web | Google Developers () https://developers.google.com/+/web/api/rest/openidconnect/getOpenIdConnect
[22] OpenID Connect | Google Identity Platform | Google Developers () https://developers.google.com/identity/protocols/OpenIDConnect