In developing countries, microenterprises comprise the vast majority of the small business sector – a result of the relative lack of formal sector jobs available for the poor. These microentrepreneurs operate microenterprises not by choice, but out of necessity. The article gives the results of a statistically significant study of microbusiness in Balakovo city. Quality and reliability of study results evaluated both by traditional statistical methods and by the Rasch model. Microbusiness can not provide jobs downsized employees with large companies, however, the growth in demand will lead to a moderate degree of coupling (0,59) to increase staff in microenterprises. The bulk of today's entrepreneurs in Russia have acquired this status in 1998-2000, i.e. during and after the ‘August 1998’ crisis. A modification of the sociological tools to measure the micro business is offered.
Sedov, Dmitry G., Empirical Study of Microbusiness of Local Social Environment in Crisis: Russia (February 26, 2011). Available at SSRN: http://ssrn.com/abstract=1770425

The research goal is to investigate regional characteristics of masticatory apparatus reduction of population of penza and penza region. 116 female and 98 male patients at the age between 21-36 were under study. According to the research results, mesio-distal reduction level of molars and incisors with sex factor was found out. Evaluation of teeth reduction indices was effected
O.V. Kalmin, I.V. Malanjin, L.A. Zyulkina, P.V. Ivanov Characteristics of masticatory apparatus reduction among population of Penza and Penza region // Saratov Journal of Medical Scientific Research, Vol. 6, Issue 2, 2010, pp. 388-392