@article {2002,
	title = {Controllability of quantum mechanical systems by root space decomposition of su(N)},
	journal = {J.Math.Phys. 43(2002), no.5, 2051},
	number = {SISSA;42/2002/M},
	year = {2002},
	publisher = {SISSA Library},
	doi = {10.1063/1.1467611},
	url = {http://hdl.handle.net/1963/1613},
	author = {Claudio Altafini}
}
