1. Karnaukhov V.N., Yashin V.A., Kulakov V.I., Vershinin V.M., Dudarev V.V. Apparatus for investigation of fluorescence characteristics of microscopic objects. USA Patent, 1982, vol. 354, no. 4, iss. 114, pp. 1-14.

2. Karnaukhova N.A, Sergievich L.A., Karnaukhov V.N. Application of microspectral analysis to study intracellular metabolism in single cells and cell systems. Natural Science, 2010, vol. 2, no. 5, pp. 444-449

3. Roshchina V.V., Yashin V.A., Kunyev A.R., Soltani G.A., Prizova N.K., Khaibulaeva L.M. The presence of azulenes on the surface of plant cells as a test for sensitivity to ozone. Biological Membranes, 2022, vol. 39, no. 1, pp. 54-62 (In Russ.). DOI: https://doi.org/10.31857/S023347552201008X; EDN: https://elibrary.ru/HBXOXH

4. Konovalov D.A. Natural azulenes. Plant Resources, 1995, vol. 31, no. 1, pp.101-130 (In Russ.). EDN: https://elibrary.ru/QEWSZN

5. Zolotarev V.M. Application of differentiation in reflection spectroscopy. Optics and Spectroscopy, 2012, vol. 112, no. 1, pp. 150-154 (In Russ.). EDN: https://elibrary.ru/OOWLIP

6. Roshchina V.V. Fluorescing World of Plant Secreting Cells. Enfield, Jersey, Plymouth: Science Publisher, 2008, 338 p.

7. Roshchina V.V., Prizova N.K., Khaibulaeva L.M. Azulenes of the leaf surface as a protective optical filter. Russian journal of biological physics and chemistry, 2022, vol. 7, no. 1, pp. 36-39 (In Russ.). DOI: https://doi.org/10.29039/rusjbpc.2022.0480; EDN: https://elibrary.ru/BMOWXC

8. Bakun P., Czarczynska-Goslinska, B., Goslinski T., Lijewski S. In vitro and in vivo biological activities of azulene derivatives with potential applications in medicine. Med Chem Res, 2021, vol. 30, pp. 834-846, doi:https://doi.org/10.1007/s00044-021-02701-0. EDN: https://elibrary.ru/SKTFML

9. Murfin L.C., Lewis S.E. Azulene - a Bright core fore sensing and imaging. Molecules, 2021, vol. 26, no. 2, pp. 353-362, doi:https://doi.org/10.3390/molecules26020353. EDN: https://elibrary.ru/BRPSEO