Singh, A. I. (1996). Completely positive hypergroup actions. American Mathematical Society.
Cita Chicago (17th ed.)Singh, Ajit Iqbal. Completely Positive Hypergroup Actions. Providence: American Mathematical Society, 1996.
Cita MLA (9th ed.)Singh, Ajit Iqbal. Completely Positive Hypergroup Actions. American Mathematical Society, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.