Для цитирования:

  . Наносистемы: физика, химия, математика. 2016;7(5):888-892. https://doi.org/10.17586/2220-8054-2016-7-5-888-892

For citation:

Haydarov F.H. Characterization of the normal subgroups of finite index for the group representation of a Cayley tree. Nanosystems: Physics, Chemistry, Mathematics. 2016;7(5):888-892. https://doi.org/10.17586/2220-8054-2016-7-5-888-892