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2010 Jun 4: À±ÀÚ»ó(Univ. of Texas); Open problems in multivariable weighted shifts

2011 Jun 3: À±ÀÚ»ó(Univ. of Texas); A bridge between single and multivariable weighted shifts

2011 Jun 13: À±ÀÚ»ó(Univ. of Texas); Note on the hyponormality of arbitrary powers of weighted shifts

2013 May 24: À±ÀÚ»ó(University of Texas - Pan Americ); Aluthge transform of multivariable operators

2013 Jun 28: À±ÀÚ»ó(University of Texas - Pan Americ); Generalized Cauchy-Hankel matrices and their applications