What did theoretical models suggest could slow atmospheric erosion on Venus?

Answer

Placing a miniature magnetic dipole at the Venus L1 Lagrange point.

Simulations indicated that artificially imposing a field via a miniature magnetic dipole at the L1 Lagrange point (between the Sun and Venus) could deflect the solar wind and significantly slow atmospheric erosion.

What did theoretical models suggest could slow atmospheric erosion on Venus?
EarthVenüsplanetsmagnetic field