主题：【已应助】求SD老文献数篇，不胜感激。

【序号】：1
【作者】：A. Wilhelms1, *, R.L. Patience1, †, S.R. Larter2 and S. Jørgensen3
【题名】：Nitrogen functionality distributions in asphaltenes isolated from several oils from different source rock types 
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【全文链接】:http://www.sciencedirect.com/science/article/B6V66-48C8JW6-116/2/e7b630815f6ebd71003053c69f15b18c









【序号】：2
【作者】：Jaroslav Černýa, Jiří Mitera* and Petr Vavrečkaa
【题名】：Separation and identification of nitrogen compounds in coal-tar pitch 
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【全文链接】:http://www.sciencedirect.com/science/article/B6V3B-498TN04-TB/2/f138b35c469bcb96cd28d6ba37970f2c











【序号】：3
【作者】：Maja Stefanovaa and Lazarin Lazarova
【题名】：Gas chromatography-mass spectrometry study of coal-derived asphaltenes : II. Carbazole-type neutral nitrogen compounds 
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【全文链接】:http://www.sciencedirect.com/science/article/B6TG8-44V35M6-NF/2/b0768306bb8b223c79bab1c9284960c5











【序号】：4
【作者】：Douglas W. Later*, a, Richard B. Luckea, Edward K. Chessa and James A. Franza
【题名】：Separation and identification of carbazole, benz[e]indole and benz[g]indole in coal-derived materials 
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【全文链接】:http://www.sciencedirect.com/science/article/B6V3B-498MC5Y-J8/2/047cf117a1e11bd5ff2c5e567a04c284












【序号】：5
【作者】：M. Dorbon1, *, J.M. Schmitter, 1, P. Garrigues2, I. Ignatiadis1, M. Ewald2, P. Arpino1 and G. Guiochon
【题名】：Distribution of carbazole derivatives in petroleum 
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【全文链接】:http://www.sciencedirect.com/science/article/B6V7P-48CFW7C-2/2/fe3e1659704711035d72a7ceb4a6aac2