TeX avots:
{f_C}\; = \;\frac{1}{{2\pi }}\;\sqrt {\frac{{m''c_o^4}}{{B'si{n^4}\theta }}} \;\;;\;\;{f_{C\;MIN}}\; = \;\frac{1}{{2\pi }}\;\sqrt {\frac{{m''c_o^4}}{{B' }}} \;