Saviščevas, Eugenijus. “Samogitia and Lithuania in 13-18th Centuries: The Splendour and the Poverty of Regional (Provincial) Self-Goveming”. Lietuvos Istorijos Studijos, vol. 23, Sept. 2009, pp. 94-110, https://doi.org/10.15388/LIS.2009.36960.