000 00410nam a2200181 4500
020 _a
_c
082 _aBV PRL 1971.26(14-26)
100 _a
245 _aPhysical review letters, 1971, Vol.26, No.14-26
250 _a
260 _aAmerican Physical Society, New York
_c1971
300 _a1706
490 _a
500 _a
590 _aVMV
_b
_c
650 _aPhysical review letters
942 _cBK
999 _c476871
_d476871