New characterizations for Hankel transformable spaces of Zemanian. Betancor, J.J. — 1996 International Journal of Mathematics and Mathematical Sciences
Characterization of Hankel transformable generalized functions. Betancor, J.J. — 1991 International Journal of Mathematics and Mathematical Sciences
Two complex variants of a Hankel type transformation of generalized functions Betancor, J.J. — 1989 Portugaliae mathematica
Weighted norm inequalities for the ℋ -transformation. Betancor, J.J.; Jerez, C. — 1997 International Journal of Mathematics and Mathematical Sciences
On asymptotic expansions of Kratzel's integral transforms Barrios, J.A.; Betancor, J.J. — 1992 Portugaliae mathematica