@article{10_5817_AM2016_5_313,
     author = {Hol{\'\i}kov\'a, Marie and K\v{r}i\v{z}ka, Libor and Somberg, Petr},
     title = {Projective structure, $\widetilde{\operatorname{SL}}(3,\mathbb{R})$ and the symplectic {Dirac} operator},
     journal = {Archivum mathematicum},
     pages = {313--324},
     publisher = {mathdoc},
     volume = {52},
     number = {5},
     year = {2016},
     doi = {10.5817/AM2016-5-313},
     mrnumber = {3610866},
     zbl = {06674907},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5817/AM2016-5-313/}
}