Factorization for Hardy spaces and characterization for BMO spaces via commutators in the Bessel setting Xuan DuongJi LiBrett WickDongyong Yang Indiana University Mathematics Journal 2017 text pdf 10.1512/iumj.2017.66.6115 10.1512/iumj.2017.66.6115 en Indiana Univ. Math. J. 66 (2017) 1081 - 1106 state-of-the-art mathematics http://iumj.org/access/