Antonio Gamboa Utah State University, EEUU,Jordan A. Ramilowski Utah State University, EEUU,F. Borondo Universidad Autónoma de Madrid, Chaos in the classical mechanics of bound and quasi-bound HX-4He complexes with X=F,Cl,Br,CN. PHYSICAL CHEMISTRY CHEMICAL PHYSICS 11, 8203-8213 (2009). DOI: 10.1039/b902486g