Published part of Proefschrift

Chapter 1: Pages 19–50

Chapter 2: Pages 51–89

Chapter 3: Pages 90–111

Chapter 4: Pages 112-133

Chapter 5: Pages 134-156

H.W. Capel and J.H.H. Perk

J.H.H. Perk and H.W. Capel

J.H.H. Perk, H.W. Capel and Th.J. Siskens

J.H.H. Perk and H.W. Capel

J.H.H. Perk and H.W. Capel, Preprint of

Physica A 87 (1977) 211–242

Physica A 89 (1977) 265–303

Physica A 89 (1977) 304–325

Physica A 92 (1978) 163–184

Physica A 100 (1980) 1–23

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