Advantages of this work: This study was carried out at a high scientific and professional level. During the work all tasks were fulfilled. It is necessary to note the creative approach to the collection and analysis of the material, the complexity of the study, as well as the interest of the student. This work is of a practical nature and may be recommended for implementation.
 The drawbacks of this work: There are small stylistic errors, which are explained by the lack of skill to constantly write independent texts.
 Supervisor’s opinion: The work of Volova P.S. meets the requirements that are presented for the graduation of qualification works and deserves high mark.