Classifying higher rank analytic Toeplitz algebras. Power, Stephen C. (2007) The New York Journal of Mathematics [electronic only]
Noncommutative uniform algebras Mati Abel, Krzysztof Jarosz (2004) Studia Mathematica We show that a real Banach algebra A such that ||a²|| = ||a||² for a ∈ A is a subalgebra of the algebra C ℍ ( X ) of continuous quaternion-valued functions on a compact set X.
Representations of higher rank graph algebras. Davidson, Kenneth R., Yang, Dilian (2009) The New York Journal of Mathematics [electronic only]