1. Associations of bed forms and palaeocurrent patterns in an esker delta, Haapajärvi, Finland;Aario;Suomal. Tiedeakat. Toim., Sarja,1972
2. A quantitative model of climbing ripples and their cross-laminated deposits;Ball;Sedimentology,1970
3. A theoretical and experimental study of climbing-ripple cross-lamination, with a field application to the Uppsala Esker;Ball;Geoff. Annlr,1972
4. A classification of climbing-ripple cross-lamination;Ball;J. geol. Soc. Lond.,1973