@article{10_4064_am29_3_6,
     author = {Llu{\'\i}s Alsed\`a and Jos\'e Miguel Moreno},
     title = {On the primary orbits of star maps
 (second part: spiral orbits)},
     journal = {Applicationes Mathematicae},
     pages = {331--357},
     year = {2002},
     volume = {29},
     number = {3},
     doi = {10.4064/am29-3-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am29-3-6/}
}