"The Raman spectrum of BaTiO3 nanoparticles prepared by sol-gel method is presented in Figure [of Sherlin . The Raman bands (position and intensity) noticed in the range of 160-720 cm -1 can be assigned to BaTiO3 nanoparticles" (Sherlin Vinita and coworkers mentioning . "All the Raman optically active modes in the tetragonal phase can be represented by 3[A1(TO) + A1(LO)] + B1 + 4[E (TO) + E(LO)] modes" (Sherlin Vinita and coworkers are referring to a Ref.38, an article with wrong authors' names; DOI corresponds to . For nanoparticles, the researchers find four dominant bands with positions at 237, 296, 506, and 714 cm -1 . "More than one phonon modes are available for each Raman bands, since the wavenumbers of some A1 and E modes are very closer, consequently the observed modes are mixed" (Sherlin Vinita and coworkers mentioning . "Additionally, Raman spectrum of the tetragonal BaTiO3 phase contains negative dips at 158 cm -1 and 442 cm -1 (E (TO), E(LO)). Scalabrin et al. interpreted this latter effect as overdamped mode due to the interference of the TO modes, while Venkateswaran et al. interpreted it as an interference due to the anharmonic coupling between the A1(TO) phonons. The tetragonal phase can be confirmed by noticing the relative intensity of the bands at 296 and 714 cm -1 . The Raman band appeared at 296 cm -1 is assigned to the B1 mode, suggesting asymmetry within the [TiO6] octahedral, while the Raman band located at 714 cm -1 is related to the LO mode of A1 symmetry. In fact, these bands are absent in the cubic phase" (Sherlin Vinita and coworkers mentioning .