
JETP, Vol. 42,
No. 6,
p. 1068 (December 1975)
(Russian original - ZhETF,
Vol. 69,
No. 6,
p. 2101,
December 1975
)
Contribution to the microscopic theory of the quadratic susdptibility of crystals at optical frequencies
L.B. Meisner
Received: February 4, 1975
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