For citations:

Dlugunovich V.A., Zhumar A.Yu., Mukhurov N.I. Nanoporous Alumina Films Optical Anisotropy as the Basis for Creation of Achromatic Phase Plates with a Variable Phase Difference of the Orthogonal Polarized. Zhurnal Prikladnoii Spektroskopii. 2023;90(2):324-328. (In Russ.) https://doi.org/10.47612/0514-7506-2023-90-2-324-328