|  ZhETF, Vol. 75, 
No. 4,
p. 1303 (October 1978)
 (English translation - JETP, 
	Vol. 48, 
	No. 4,
	p. 656,
	October 1978
)
 
 The issue content is only available in english translation.
 
 
 
	On the constancy of an adiabatic invariant when the nature of the motion changes
A.V. Timofeev
 
 Received: April 28, 1978
 
 
 
 
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