From Menachem Shlossberg
- Minimality in topological groups and Heisenberg type groups, Topol. Proc. 35 (2010), 331-344.
- Notes on non-archimedean topological groups (joint work with M. Megrelishvili), Topol. Appl. 159 (2012), 2497 – 2505.
- Free non-archimedean topological groups (joint work with M. Megrelishvili), Comment. Math. Univ. Carolin. 54 (2013), no. 2, 273-312.
- On Graev type ultra-metrics, Topol. Proc. 45 (2015), 217-226.
- Non-archimedean transportation problems and Kantorovich ultra-norms (joint work with M. Megrelishvili), p-Adic Numbers, Ultrametric Analysis and Applications 8 (2016), no.2 , 125-148.
- Minimality of the semidirect product (joint work with M. Megrelishvili and L. Polev), Topol. Proc. 49 (2017), 199-210.
- Balanced and Functionally balanced $P$-groups, to appear in Topological Algebra and its Applications.