Searching for Tetraneutron in Bismuth Nucleus Photodisintegration Reaction. - Kotanjyan, T. V.; Aleksanyan, A. Y.; Kechechyan, A. O.; Amirkhanyan, S. M.; Gulkanyan, H. R.; Pogosov, V. S.; Poghosyan, L. A. (Journal of Contemporary Physics, 2023)