@article {2009,
	title = {Twisted Covariance vs Weyl Quantisation},
	number = {SISSA;13/2009/FM},
	year = {2009},
	abstract = {In this letter we wish to clarify in which sense the tensor nature of the commutation relations [x^mu,x^nu]=i theta ^{mu nu} underlying Minkowski spacetime quantisation cannot be suppressed even in the twisted approach to Lorentz covariance. We then address the vexata quaestio \\\"why theta\\\"?},
	url = {http://hdl.handle.net/1963/3451},
	author = {Gherardo Piacitelli}
}
