Sundberg, Richard J.; Yamazaki, Toshio (1 February 1967). "Rearrangements and ring expansions during the deoxygenation of β,β-disubstituted o-nitrostyrenes". The Journal of Organic Chemistry. 32 (2): 290–294. doi:10.1021/jo01288a009.
Sundberg, Richard J. (1 November 1965). "Deoxygenation of Nitro Groups by Trivalent Phosphorus. Indoles from o-Nitrostyrenes". The Journal of Organic Chemistry. 30 (11): 3604–3610. doi:10.1021/jo01022a006.
Gribble, Gordon W. (17 June 2016). "Cadogan–Sundberg Indole Synthesis". Indole Ring Synthesis: From Natural Products to Drug Discovery. doi:10.1002/9781118695692.ch26. ISBN9781118695692.
Majgier-Baranowska, Helena; Williams, John D.; Li, Bing; Peet, Norton P. (1 February 1967). "Studies on the mechanism of the Cadogan–Sundberg indole synthesis". Tetrahedron Letters. 53 (35): 4785–4788. doi:10.1016/j.tetlet.2012.06.146.
Li, Jie Jack (4 January 2014). "Cadogan–Sundberg indole synthesis". Indole Ring Synthesis: From Natural Products to Drug Discovery. Springer. p. 102-103. doi:10.1007/978-3-319-03979-4_49. ISBN978-3-319-03979-4.
Sundberg, Richard J.; Yamazaki, Toshio (1 February 1967). "Rearrangements and ring expansions during the deoxygenation of β,β-disubstituted o-nitrostyrenes". The Journal of Organic Chemistry. 32 (2): 290–294. doi:10.1021/jo01288a009.
Sundberg, Richard J. (1 November 1965). "Deoxygenation of Nitro Groups by Trivalent Phosphorus. Indoles from o-Nitrostyrenes". The Journal of Organic Chemistry. 30 (11): 3604–3610. doi:10.1021/jo01022a006.
Kuethe, Jeffrey T.; Wong, Audrey; Davies, Iaan W. (3 September 2003). "Effective Strategy for the Preparation of Indolocarbazole Aglycons and Glycosides: Total Synthesis of Tjipanazoles B, D, E, and I". Organic Letters. 5 (20): 3721–3723. doi:10.1021/ol035418r.