http://chrdk.ru/sci/2016/3/28/stiven_hoking_ya_byl_vpechatlen_kogda_sssr_operedil_ssha_v_kosmicheskoi_gonke/?utm_source=nsp&utm_medium=tass&utm_campaign=tgb http://www.vedomosti.ru/opinion/articles/2015/10/14/612719-promishlennaya-revolyutsiya