Introduction : hybrid warfare in post-Soviet spaces, is there a logic behind?Polese, Abel; Kevlihan, Rob; Beachain, Donnacha O.Small wars & insurgencies2016 / p. 361-366 http://dx.doi.org/10.1080/09592318.2016.1151660

The use of force against Ukraine and international law : jus ad bellum, jus in bello, jus post bellum2018 https://doi.org/10.1007/978-94-6265-222-4