1975, 24(3): 168-173.
DOI: 10.7498/aps.24.168
CSTR: 32037.14.aps.24.168
1975, 24(3): 180-186.
DOI: 10.7498/aps.24.180
CSTR: 32037.14.aps.24.180
1975, 24(3): 215-222.
DOI: 10.7498/aps.24.215
CSTR: 32037.14.aps.24.215


