Title: Trudnosti slovoupotreblenii︠a︡ i varianty norm russkogo literaturnogo i︠a︡zyka; slovarʹ-spravochnik.
Authors: Gorbachevich, K. S.; Institut russkogo i︠a︡zyka (Akademii︠a︡ nauk SSSR)
Publisher: "Nauka," Leningr. otd-nie,
Year: 1973
Subjects: Russian language Usage Dictionaries.