H. Kovarik, K. Pankrashkin:
On the p-Laplacian with Robin boundary conditions and boundary trace theorems
Calc. Var. Partial Differential Equations Vol. 56, 2017

H. Kovarik, K. Pankrashkin:
Robin eigenvalues on domains with peaks
J. Differential Equations Vol. 267, p. 1600-1630, 2019

V. Franceschi, K. Naderi, K. Pankrashkin:
Embedded trace operator for infinite metric trees
(preprint) http://arxiv.org/abs/2303.04527 2023

K. Pankrashkin, F. Sk, M. Vogel:
Laplacian eigenvalues for large negative Robin parameters on domains with outward peaks
(Preprint) p. 25, 2025