Key points are not available for this paper at this time.
Their arguments are as follows: From the He' recoil experi- ment and from Eq. (A-4) of reference 1 one concludes that (~C z~'+ ~Cz')')/(~Cr~'+ I Cr'~') & -', . Hence, by comparing Eq. (
Garwin et al. (Fri,) studied this question.