Scott Martin is equivalent to Earth-2's Alan Scott and is named for him and his creator Martin Nodell, and Julie Gardener is equivalent to Earth-1's Hal Jordan (although her name may also be a reference to Guy Gardner, it is more likely a reference to Julius Schwartz who was frequently credited as Julie Schwartz and Gardner Fox).
Scott Martin is the counterpart of Alan Scott from Earth-2, named after him and his creator, Martin Nodell. Similarly, Julie Gardener is equivalent to Hal Jordan from Earth-1, although her name may also be a nod to Guy Gardner. It's more likely that it's a reference to Julius Schwartz, who was frequently credited as Julie Schwartz and Gardner Fox.