Starodubrovskaya et al. 2007, p. 239, 4.3.2 Two Tier Structure. Starodubrovskaya, Irina; Slavgorodskaya, Margarita; Letunova, Tatiana; Mironova, Nina (2007), Regional Peculiarities of the Municipal Reform in the Period of Transition, Consortium for Economic Policy Research and Advice, SSRN2109234
Starodubrovskaya et al. 2007, p. 256, 4.3.3 Large Single Tier Structure. Starodubrovskaya, Irina; Slavgorodskaya, Margarita; Letunova, Tatiana; Mironova, Nina (2007), Regional Peculiarities of the Municipal Reform in the Period of Transition, Consortium for Economic Policy Research and Advice, SSRN2109234