COMPARISON OF QUASI-FOUR-FREQUENCY AND FOUR-FREQUENCY ZEEMAN LASER GYROS WITH DIFFERENT TYPES OF BIASING СтатьяKuznetsov E., Golyaev Y., Kolbas Y., Savelev I., Soloveva T.OGC 2022 - 7th Optoelectronics Global Conference. 2022. С. 1-5