Funding for this research was provided by:
Hong Kong research grants council (PolyU153085/16p)
Australian Mathematical Society (Lift-off fellowship)
CARMA Priority Research Centre at University of Newcastle (Priority Research Center funds)
Australian Research Council (DP160101537)
Curtin University
Article History
Received: 22 February 2021
Accepted: 28 December 2021
First Online: 7 February 2022