Send the following on WhatsApp
Continue to ChatSelf-dual metrics on non-simply connected 4-manifolds - https://avesis.metu.edu.tr/publication/details/f16b4ebb-593e-4a17-8694-e68a989820b1/self-dual-metrics-on-non-simply-connected-4-manifolds
Self-dual metrics on non-simply connected 4-manifolds - https://avesis.metu.edu.tr/publication/details/f16b4ebb-593e-4a17-8694-e68a989820b1/self-dual-metrics-on-non-simply-connected-4-manifolds