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- Author: Энслоу Ф.Г. (ред.)
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- Year: 1976
- Author: Павловский.
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- Year: 1977
- Author: Flake C Campbell Jr
- Language: English
- Year: 2004
- Author: María Guðjónsdóttir Peter S. Belton Graham A. Webb
- Language: English
- Year: 2009
- Author: Шелдрейк Руперт
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- Author: Manson Benedict Thomas H. Pigford Hans Wolfgang Levi
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- Year: 1981