H.S. Ndakwo  , 
    On the Use of Orthogonality Relations to Construct Character Tables of Finite Group,
    Research Journal of Applied Sciences,
    Volume 2,Issue 3,
    2007,
    Pages 314-318,
    ISSN 1815-932x,
    rjasci.2007.314.318,
    (https://makhillpublications.co/view-article.php?doi=rjasci.2007.314.318)
    Abstract: Group characters are very fundamental in the study of group representation. In this paper we employed the orthogonality relation in constructing the character table which shows the difference irreducible characters for each conjugacy class. The first kind is used along the rows, while the second kind is used along the columns. Relevant details of this method are described following.
    Keywords: Group characters;representation;orthogonality relation;irreducible;conjugacy class;inner product