Citation: Volkov, Sergey; Arsent'ev, Maxim; Ugolkov, Valery; Povolotskiy, Alexey; Savchenko, Yevgeny; Krzhizhanovskaya, Maria; Bubnova, Rimma; Aksenov, Sergey (2023). When the difference between incommensurate and commensurate structures becomes elusive: the case of Bi4BO7 X (X = Cl, Br) oxyhalides. Journal of Applied Crystallography, 56, pp. 589-596.