RETRACTED: Two-parameters single equation stem taper models of Pinus sibirica in Siberia, RussiaAleksandr Lebedev, Vladimir Gostev, Aleksandr Gemonov, Olga Koryakina and Oleg KanadinE3S Web Conf., 420 (2023) 01024DOI: https://doi.org/10.1051/e3sconf/202342001024