Artificial radioactivity

[21] BANKS, 1940, PHYS REV, V57, P1067

[22] BARKAS, 1940, PHYS REV, V58, P194

[23] BARKAS, 1939, PHYS REV, V56, P287

[24] BARKAS, 1940, PHYS REV, V57, P562

[25] BARKAS, 1940, PHYS REV, V57, P1087

[26] BARKER, 1940, P NAT ACAD SCI, V26, P426

[27] BARNES, 1937, PHYS REV, V51, P775

[28] BARNES, 1938, PHYS REV, V53, P946

[29] BARNES, 1939, PHYS REV, V55, P50

[30] BARNES, 1939, PHYS REV, V56, P414

[21] BANKS, 1940, PHYS REV, V57, P1067

[22] BARKAS, 1940, PHYS REV, V58, P194

[23] BARKAS, 1939, PHYS REV, V56, P287

[24] BARKAS, 1940, PHYS REV, V57, P562

[25] BARKAS, 1940, PHYS REV, V57, P1087

[26] BARKER, 1940, P NAT ACAD SCI, V26, P426

[27] BARNES, 1937, PHYS REV, V51, P775

[28] BARNES, 1938, PHYS REV, V53, P946

[29] BARNES, 1939, PHYS REV, V55, P50

[30] BARNES, 1939, PHYS REV, V56, P414