@conference {aja2004hierarchical,
	title = {Hierarchical fuzzy systems with FITM},
	booktitle = {Fuzzy Systems, 2004. Proceedings. 2004 IEEE International Conference on},
	volume = {2},
	year = {2004},
	pages = {767{\textendash}772},
	publisher = {IEEE},
	organization = {IEEE},
	author = {Santiago Aja-Fern{\'a}ndez and Carlos Alberola-Lopez}
}
