by Orelma, H., Hokkanen, A., Leppänen, I., Kammiovirta, K., Kapulainen, M., Harlin, A.
Published in Cellulose (London) (01.02.2020)

by Orelma, H., Vieira, N.
Published in Complex analysis and operator theory (01.06.2017)

by Castro, C, Zuluaga, R, Rojas, O. J, Filpponen, I, Orelma, H, Londoño, M, Betancourt, S, Gañán, P
Published in RSC advances (01.01.2015)

by Eriksson, S.-L., Orelma, H., Vieira, N.
Published in Complex analysis and operator theory (01.02.2018)

by Heikki Orelma
Published in Vestnik Samarskogo gosudarstvennogo tehničeskogo universiteta. Seriâ Fiziko-matematičeskie nauki (01.01.2019)

by Eriksson, S.-L., Orelma, H.
Published in Complex analysis and operator theory (01.10.2013)