000 00410nam a2200181 4500
020 _a
_c
082 _aBV PRL 1971.27(14-26)
100 _a
245 _aPhysical review letters, 1971, Vol.27, No.14-26
250 _a
260 _aAmerican Physical Society, New York
_c1971
300 _a1854
490 _a
500 _a
590 _aVMV
_b
_c
650 _aPhysical review letters
942 _cBK
999 _c476873
_d476873