A Note on Relative Efficiency of Axiom Systems. - Andrea Sorbi; Sandra Fontani; Franco Montagna (Math. Log. Q., 1994)

Efficient Identification of Classes of P-Time Functions. - Sandra Fontani (J. Univers. Comput. Sci., 2000)

Efficient Measure Learning. - Sandra Fontani (J. Univers. Comput. Sci., 2001)