Rational inner functions on a square-matrix  polyball, with D. S. Kaliuzhnyi-Verbovetskyi, V. Vinnikov, and H. J. Woerdeman, AWM-Springer Series, 5, (2017).

 

Contractive determinantal representations of stable polynomials on a matrix polyball,

           with D. S. Kaliuzhnyi-Verbovetskyi, V. Vinnikov, and H. J. Woerdeman, Math. Z. 283 (2016), no. 1-2.

 

Matrix-valued Hermitian positivstellensatz, lurking contractions, and contractive determinantal representations of stable polynomials,

           with D. S. Kaliuzhnyi-Verbovetskyi, V. Vinnikov, and H. J. Woerdeman, Operator Theory: Adv. Appl., 255 (2016).

 

Stable and real-zero polynomials in two variables, with D. S. Kaliuzhnyi-Verbovetskyi, V. Vinnikov, and H. J. Woerdeman, Multidim. Systems and Signal Processing, 27 (2016), 1.

 

Norm-constrained determinantal representations of multivariable polynomials, with D. S. Kaliuzhnyi-Verbovetskyi and H. J. Woerdeman, Compl. Anal. Oper. Theory, 7 (2013), 3.

 

Tuples of commuting contractions satisfying the von Neumann inequality, with D. S. Kaliuzhnyi-Verbovetskyi, V. Vinnikov, and H. J. Woerdeman, J. Funct. Anal. 256 (2009), 9.

 

A note on Chebyshev polynomials and finite difference wave equation , Contemporary Math., AMS, 428 (2007).

 

Monotone functions of abstract chains, Comput. Methods Funct. Theory 6 (2006), 1.

 

A note on de Branges' weights , with A. Z. Grinshpan, Proc. Amer. Math. Soc. 133 (2005).

 

Conditional positivity of divided difference Hermitian forms, preprint.

 

Electrostatics, hyperbolic geometry, and wandering vectors, J. London Math. Soc. (2) 69 (2004).

 

A minimum energy problem and Dirichlet spaces, Proc. Amer. Math. Soc. 130 (2002).