Electronic properties of arrayed K clusters in zeolite LTA with Si/Al = 1.5 T. Kodaira, S. Inoue and Y. Murakami Eur. Phys. J. D, 43 1-3 (2007) 267-270 Published online: 24 May 2007 DOI: 10.1140/epjd/e2007-00065-1