สิทธัตถะโคตะมะเป็นบุคคลในประวัติศาสตร์จริงไหม?

References recovering Buddha’s message by Richard Gombrich http://www.shin-ibs.edu/documents/bForum/v1/01Gombrich.pdf Sutra central https://suttacentral.net/?lang=en The Oral Transmission of Early Buddhist Literature - Journal of the International Association of Buddhist Studies (Volume 27. No. 1 2004) by Alex Wynne http://www.ocbs.org/lectures-a-articles-ocbsmain-121/alex-wynne-articles https://www.academia.edu/41361170/Who_was_the_Buddha Pain and it’s ending https://books.google.co.uk/books/about/Pain_and_Its_Ending.html?id=gFPttDPD-48C http://www.watnyanaves.net/uploads/File/books/pdf/the_pali_canon_what_a_buddhist_must_know.pdf Siddhartha Gautama what’s in a name ? https://www.academia.edu/4866512/Siddh%C4%81rtha_Gautama_Whats_in_a_Name The Authenticity of the Early Buddhist Texts by Bhikkhu Sujato and Bhikkhu Brahmali http://www.ocbs.org/on-line-publications/69-online-publications/339-the-authenticity-of-the-early-buddhist-textsm Books: Rupert Gethin, Foundations of Buddhism https://amzn.to/2PIONpi Richard Gombrich, What the Buddha Thought https:// amzn.to/2DmcMVD Bart Ehrman, Did Jesus Exist? https://amzn.to/2Rz4Qn2