000 00411nam a2200181 4500
020 _a
_c
082 _aBV PRL 1973.47B(01-06)
100 _a
245 _aPhysical review letters, 1973, Vol.47B, No.01-06
250 _a
260 _aAmerican Physical Society, New York
_c1973
300 _a556
490 _a
500 _a
590 _aVMV
_b
_c
650 _aPhysical review letters
942 _cBK
999 _c477347
_d477347