by Diehl, S., Wallin, N. -O.
Published in Communications in mathematical physics (1996)

by Claesson, J., Follin, S., Hellström, G., Wallin, N.-O.
Published in International journal of rock mechanics and mining sciences & geomechanics abstracts (01.07.1995)

by WALLIN, N. O.
Published in Mathematica scandinavica (01.12.1961)

by CLAESSON, J, FOLLIN, S, HELLSTRÖM, G, WALLIN, N.-O
Published in International journal of rock mechanics and mining sciences & geomechanics abstracts (1995)