REFERENCE Of Scientific supervisor for graduate qualification work of the undergraduate student of 2 years of training of the Physics Department of St. Petersburg State University Anna Senchukova "Hydrodynamic and optical properties of crosslinked macromolecules in organic and aqueous solutions".  In graduation work of Senchukova A.S. the results of viscometry, flow birefringence (Maxwell effect), electric birefringence (Kerr effect), and dynamic light scattering of crosslinked polymers of poly-11-acrylamidinedecanoic acid (cPAAU-H) and poly-11-acrylamidinedecanoate sodium (cPAAU-Na) with different content of cross-linking agents were studied. The aim of this work is to study the hydrodynamic and optical properties of crosslinked polymers, as well as to determine the effect of the amount of cross-linking on the conformation and optical characteristics of macromolecules in organic and aqueous solvents. In the final qualification work according to the plagiarism test (SafeAssign), 11% of borrowings are contained. During the training Senchukova A.S. successfully profit by the experimental methods used in this work. When performing the experiment and processing the data, Senchukova A.S. showed herself to be a qualified, responsible physicist. I believe that the work of Anna Senchukova meets the requirements for master's thesis on physics, and deserves an "excellent" rating.   Scientific adviser Prof. Tsvetkov N.V. 23.05.2017