COLOR AND CONSTITUTION .6. PYRROLOCYANINES

[11] NENITZESCU, 1929, B SOC CHIM ROMANIA, V11, P135

[12] OGATA, 1934, B I PHYS CHEM RES JA, V13, P488

[13] OGATA, 1937, B I PHYS CHEM RES TO, V16, P583

[14] ROSENHAUER, 1929, BER, V62, P2729

[15] SPRAGUE RH, 1942, Patent No. 2269234

[16] 1940, Patent No. 529440

[17] 529440

[11] NENITZESCU, 1929, B SOC CHIM ROMANIA, V11, P135

[12] OGATA, 1934, B I PHYS CHEM RES JA, V13, P488

[13] OGATA, 1937, B I PHYS CHEM RES TO, V16, P583

[14] ROSENHAUER, 1929, BER, V62, P2729

[15] SPRAGUE RH, 1942, Patent No. 2269234

[16] 1940, Patent No. 529440

[17] 529440