Finding Minimal Spanning Trees in a Euclidean Coordinate Space. - Olli Nevalainen; Jarmo Ernvall; Jyrki Katajainen (BIT, 1981)

An Algorithm for Unbiased Random Sampling. - Jarmo Ernvall; Olli Nevalainen (Comput. J., 1982)

Estimating the Length of Minimal Spanning Trees in Compression of Files. - Jarmo Ernvall; Olli Nevalainen (BIT, 1984)