@article{10_4153_S0008414X22000323,
     author = {Anjos, S{\'\i}lvia and Barata, Miguel and Pinsonnault, Martin and Reis, Ana Alexandra},
     title = {Loops in the fundamental group of ${\mbox{Symp}} ({\mathbb C}{\mathbb P}^2\# \mbox{5}\overline { \mathbb C\mathbb P}\,\!^2,\omega )$ which are not represented by circle actions},
     journal = {Canadian journal of mathematics},
     pages = {1226--1271},
     year = {2023},
     volume = {75},
     number = {4},
     doi = {10.4153/S0008414X22000323},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008414X22000323/}
}