@article{10_2140_agt_2017_17_2841, author = {Scaduto, Christopher and Stoffregen, Matthew}, title = {Klein-four connections and the {Casson} invariant for nontrivial admissible {U(2)} bundles}, journal = {Algebraic and Geometric Topology}, pages = {2841--2861}, publisher = {mathdoc}, volume = {17}, number = {5}, year = {2017}, doi = {10.2140/agt.2017.17.2841}, url = {http://geodesic.mathdoc.fr/articles/10.2140/agt.2017.17.2841/} }