K. Fässler, P. Koskela, E. Le Donne:
Nonexistence of quasiconformal maps between certain metric measure
  spaces
(preprint) 2013

K. Fässler, E. Le Donne:
On the quasi-isometric and bi-Lipschitz classification of 3D Riemannian Lie groups
(Submitted Paper) 2018

D. Di Donato, K. Fässler, T. Orponen:
Metric rectifiability of $\mathbb{H}$-regular surfaces with Hölder
  continuous horizontal normal
(preprint) 2019

D. Di Donato, K. Fässler:
Extensions and corona decompositions of low-dimensional intrinsic
  Lipschitz graphs in Heisenberg groups
(preprint) 2020

K. Fässler, T. Orponen, A. Pinamonti:
Planar incidences and geometric inequalities in the Heisenberg group
(Preprint) 2020

K. Fässler, A. Pinamonti:
Loomis-Whitney inequalities in Heisenberg groups
Math. Zeit. (Accepted Paper) 2021

K. Fässler, A. Pinamonti, P. Wald:
Kakeya Maximal inequality in the Heisenberg group
Ann. Sc. Norm. Super. Pisa Cl. Sci. (5) (Accepted Paper) 2023

K. Fässler, I. Y. Violo:
On various Carleson-type geometric lemmas and uniform rectifiability in  metric spaces
(preprint) 2023