000 00409nam a2200181 4500
020 _a
_c
082 _aBV PRL 1973.31(01-14)
100 _a
245 _aPhysical review letters, 1973, Vol.31, No.01-14
250 _a
260 _aAmerican Physical Society, New York
_c1973
300 _a906
490 _a
500 _a
590 _aVMV
_b
_c
650 _aPhysical review letters
942 _cBK
999 _c477307
_d477307