== References ===== Journals ===* (refers to FOR J0332-3357)* (The first paper to propose rings)* (The famous Einstein Ring paper)=== News ===* (refers to FOR J0332-3357)* Einstein radius* Gravitational lens== Further reading ==
== See also ==* Conservation of angular momentum* Einstein Cross* Einstein radius* Gravitational lens* SN Refsdal== References ===== Journals ===* (refers to FOR J0332-3357)* (The first paper to propose rings)* (The famous Einstein Ring paper)=== News ===* (refers to FOR J0332-3357)== Further reading ==