| A new synthesis of benzoporphyrins using 4, 7-dihydro-4, 7-e... 
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                            | Novel versatile synthesis of substituted tetrabenzoporphyrin... 
 [Ichimura, Kunihiro; Sakuragi, Masako; Morii, Hisayuki; Yasuike, Madoka; Toba, Yasumasa; et al. Inorganica Chimica Acta, 1991 , vol. 186, p. 95 - 102]
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                            | Novel versatile synthesis of substituted tetrabenzoporphyrin... 
 [Ichimura, Kunihiro; Sakuragi, Masako; Morii, Hisayuki; Yasuike, Madoka; Toba, Yasumasa; et al. Inorganica Chimica Acta, 1991 , vol. 186, p. 95 - 102]
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                            | Synthesis and spectral properties of lanthanide double-decke... 
 [Galanin, N. E.; Shaposhnikov, G. P. Russian Journal of Organic Chemistry, 2012 , vol. 48, # 6 p. 851 - 857,7]
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