al Sentinel:  p. B1, සැකිල්ල:Factiva Tabachnikova, Olga M.; Smith, Geoff C. (2000), Topics in Group Theory, London: Springer, ISBN 1-85233-235-2 The Math Forum participants (2000), "A question around zero", Math Forum » Discussions » History » Historia-Matematica (Drexel University), http://mathforum.org/kb/message.jspa?messageID=1178542, ප්‍රතිෂ්ඨාපනය 25 September 2007 Turner, Julian (13 July 1996), "Sports Betting – For Lytham Look to the South Pacific", The Guardian:  p. 23, සැකිල්ල:Factiva Wilden, Anthony; Hammer, Rhonda (1987), The rules are no game: the strategy of communication, Routledge Kegan & Paul, ISBN 0-7100-9868-5 Wise, Stephen (2002), GIS Basics, CRC Press, ISBN 0-415-24651-2 Wong, Samuel Shaw Ming (1997), Computational Methods in Physics and Engineering, World Scientific, ISBN 981-02-3043-5 External links[සංස්කරණය]විකිඋද්ධෘත සතුව පහත තේමාව සම්බන්ධයෙන් උද්ධෘත එකතුවක් ඇත: ශුන්‍යයෙහි සමතාව Doctor Rick (2001), "Is Zero Even?", Ask Dr. Math (The Math Forum), http: