1964, Richard J. Chorley,The History of the Study of Landforms: Or the Development of Geomorphology:
(a) Diagrammatic presentation of the initial stages of evolution of thermokarstalass [...] (alass lake depressions). (b) The continued evolution ofalass depressions : A[…]
1990, Dietrich Barsch,Geomorphology and Geoecology: General, Invited and Special Lectures, Proceedings of the Second International Conference on Geomorphology, Geomorphology and Geoecology, Frankfurt/Main, 1989, Vol. 1:
[...] thermal abrasion on the shores ofalass lakes , as well as intensification of thermokarst processes within[…]
2004, David J. A. Evans,Geomorphology: Critical Concepts in Geography, Taylor & Francis US,→ISBN, page418:
...alass (thermokarst lake) development in Siberia, which also began about 130 years ago (Czudek and Demek, 1970). Mackay (1975) suggests that some of the thermokarst lakes in the upper Mackenzie Valley may be a result of climatic warming[…]
2007 May 17, Mary Chapman,The Geology of Mars: Evidence from Earth-Based Analogs, Cambridge University Press,→ISBN, page292:
...alasses join each other, the lateral development ofalass basins proceeds to form analass valley which constitutes the mature development of the thermokarst evolution. On Mars, Acidalia and Utopia Planitiae received extraordinarily[…]
