• (1965) Studies In Indian Art, p. 67
• Museum notice in the Sarnath Archaeological Museum (17 February 2019)..
  
• Understanding the 5th century Buddhas of Sarnath, p. 90, Fig.8
• Remains of the topmost wheel in the Sarnath Archaeological Museum., where the wheel is also reconstituted with 32 spokes
• Topmost wheel and abacus in the Sarnath Archaeological Museum..
  
• For a complete view of the reconstituted pillar: (1973). "'Aśokan' Pillars: A Reassessment of the Evidence". The Burlington Magazine 115 (848): 706 and 720. ISSN 0007-6287.
• Another view of the reconstituted pillar: (ਅੰਗਰੇਜ਼ੀ) (30 September 2019) Symbols in Art and Religion: The Indian and the Comparative Perspectives, Routledge, p. 96 ISBN: 978-1-136-10114-4.
• Annual Report of the Supreme Court of India (2007-2008), p. 2

Comment: the thickness of the portions of the spikes as visible in the Sarnath Museum (Remains of the topmost wheel in the Sarnath Archaeological Museum (17 February 2019).) imposes a correspondingly minimum thickness of the spikes overall.
Also a few details: correction of the head of the lion to the right + restoration of the central peg of the central wheel of the abacus. The yellow background was extracted from Sarnath standing Buddha, by Gary Todd. The original can be viewed here: Sarnath capital.jpg: . Modifications made by पाटलिपुत्र (ਗੱਲ-ਬਾਤ).