❦ Positive definite functions on Coxeter groups
with applications to operator spaces and noncommutative probability
(with Marek Bożejko & Wojciech Młotkowski),
Comm. Math. Phys., **361** (2018), no. 2, 583–604

❦ Uniform symplicity of groups with proximal action
(with Jakób Gismatullin & Nir Lazarovich),
Trans. Amer. Math. Soc. Ser. B, **4** (2017), 110-130

❦ Cancelation norm and the geometry of biinvariant word metrics
(with Michael Brandenbursky, Jarek Kędra & Michał Marcinkowski),
Glasgow Math. J., **58** (2016), no. 1, 153–176

❦ Indefinite Einstein metrics on simple Lie groups
(with Andrzej Derdziński), Indiana Univ. Math. J., **63** (2014), no. 1, 165–212

❦ Curvature spectra of simple Lie groups
(with Andrzej Derdziński), Abh. Math. Sem. Univ. Hamburg, **83** (2013), no. 2, 219–230

❦ On bi-invariant word metrics
(with Jarek Kędra), J. Topol. Anal., **3** (2011), no. 2, 161–175

❦ On distortion in groups of homeomorphisms
(with Jarek Kędra), J. Mod. Dyn., **5** (2011), no. 3, 609–622

❦ A two-cocycle on the group of symplectic diffeomorphisms
(with Jarek Kędra), Math. Z., **271** (2012), no. 3-4, 693-706

❦ A cocycle on the group of symplectic diffeomorphisms
(with Jarek Kędra), Adv. Geom., **11** (2011), no. 1, 73–88

❦ On the algebraic independence of Hamiltonian characteristic classes
(with Jarek Kędra & Aleksy Tralle), J. Symp. Geom., **9** (2011), no. 1, 1–10

❦ Even- vs. Odd-dimensional Charney–Davis Conjecture
(with Tadeusz Januszkiewicz), Discrete Comput. Geom., **44** (2010), no. 4, 802–804

❦ Asymptotic dimension and uniform embeddings
Groups, Geometry, and Dynamics, **2** (2008), no. 1, 63–84

❦ Symplectic Configurations
(with Jarek Kędra), International Mathematics Research Notices, **2006** (2006)

❦ Real Root Conjecture fails for five and higher dimensional spheres
Discrete Comput. Geom., **34** (2005), no. 2, 269–284

❦ Normal subgroups of Coxeter groups
Geometriæ Dedicata, **115** (2005), 65–78

❦ a-T-menabili1ty of groups acting on trees
Bulletin of the Australian Mathematical Society, **69** (2004), 297–303

❦ New a-T-menable HNN extensions
(with Tadeusz Januszkiewicz), Journal of Lie Theory, **13** (2003), no. 2, 383–385

❦ Euler characteristic of a configuration space of a complex
Coll. Math. **89** (2001), no. 1, 61–67