@Article{ MukZho17, author = { Mukherjee, Shirsho and Zhong, Xiao }, title = { $C^{1,α}$-Regularity for variational problems in the Heisenberg group }, journal = { Analysis & PDE }, year = { 2021 }, doi = { 10.2140/apde.2021.14.567 }, volume = { 14 }, number = { 2 }, pages = { 567–594 }, URL = { http://cvgmt.sns.it/paper/3927/ }, note = { cvgmt preprint} }