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Bose-Einstein Condensation in Dilute Gases C. J. Pethick H. Smith Cambridge U. Press, New York, 2002. 110. 00, 40. 00 paper (402 pp. ). ISBN 0-521-66194-3, ISBN 0-521-66580-9 paper Buy at Amazon
Tin-Lun Ho (2003) studied this question.