@Article{ Hak20, author = { Hakavuori, Eero }, title = { Infinite geodesics and isometric embeddings in Carnot groups of step 2 }, journal = { SIAM Journal on Control and Optimization }, year = { 2020 }, doi = { https://doi.org/10.1137/19M1271166 }, volume = { 58 }, number = { 1 }, pages = { 447-461 }, URL = { http://cvgmt.sns.it/paper/4608/ }, note = { cvgmt preprint} }