@book{754993,
	author = {Colombo, Fabrizio and Gantner, Jonathan},
	title = {Quaternionic closed operators, fractional powers and fractional diffusion process},
	publisher = {Birkhauser},
	year = {2019},
	series = {Operator theory: Advances and applications},
	address = {London},
	note = {Operator theory advances and applications Vol 274}
}