Klug, Michael R. Max Planck Institute for Mathematics, Max Planck Society;
Miller, Maggie Max Planck Institute for Mathematics, Max Planck Society;
https://doi.org/10.1112/topo.12191 (Publisher version)
Klug, M. R., & Miller, M. (2021). Concordance of surfaces in 4-manifolds and the Freedman–Quinn invariant. Journal of Topology, 14(2), 560-586. doi:10.1112/topo.12191.