БальсевичА А, ПивовароваС Г, and ПодколзинаЕ А. 2011. “The Information Transparency of Public Procurement in Russian Regions: Estimation and Explanations”. State Procurement: Management, Placement, Maintenance. Academic Appendix, no. 5 (December), 38-61. https://ojs.hse.ru/index.php/gzpr/article/view/2848.