V. E. Sergeev

• Socialist economic integration and the trade unions
• Sotrudnichestvo bolgarskikh i sovetskikh profsoi︠u︡zov
• Sot͡s︡ialisticheskai͡a︡ ėkonomicheskai͡a︡ integrat͡s︡ii͡a︡ i profsoi͡u︡zy