A couple of other early papers that you might want to reference. Although they did not use exactly the term Self-Sovereign Identity they did use the term Sovereign with regards identity.
The first one dated 2016/01/19 Soverign-Source Identity, Autonomy, and Learning by Phil Windley
The second one dated 2106/03/29 Identity System Essentials by Samuel Smith and Dmitry Khovratovich has a section on Sovereignty in identity systems including control over identifiers and the identity graph.
SmithSamuelM
commented
5 years ago
A couple of other early papers that you might want to reference. Although they did not use exactly the term Self-Sovereign Identity they did use the term Sovereign with regards identity.
The first one dated 2016/01/19 Soverign-Source Identity, Autonomy, and Learning by Phil Windley
The second one dated 2106/03/29 Identity System Essentials by Samuel Smith and Dmitry Khovratovich has a section on Sovereignty in identity systems including control over identifiers and the identity graph.