1959, 15(3): 113-130.
DOI: 10.7498/aps.15.113
CSTR: 32037.14.aps.15.113
1959, 15(3): 131-138.
DOI: 10.7498/aps.15.131
CSTR: 32037.14.aps.15.131
1959, 15(3): 139-144.
DOI: 10.7498/aps.15.139
CSTR: 32037.14.aps.15.139


