SIS junctions with frequency dependent damping for a programmable Josephson voltage standard. - Juha Hassel; Heikki Seppä; Leif Grönberg; Ilkka Suni (IEEE Trans. Instrum. Meas., 2001)

Stimulated power generation in ES-SIS junction arrays. - Juha Hassel; Panu Helistö; Leif Grönberg; Heikki Seppä; Jaani Nissilä; Antti Kemppinen (IEEE Trans. Instrum. Meas., 2005)