O'Regan, D., Cho, Y. J., & Chen, Y. (2006). Topological degree theory and applications. Chapman & Hall/CRC.
Chicago Style (17th ed.) CitationO'Regan, Donal, Yeol Je Cho, and Yu-Qing Chen. Topological Degree Theory and Applications. Boca Raton [u.a.]: Chapman & Hall/CRC, 2006.
MLA (9th ed.) CitationO'Regan, Donal, et al. Topological Degree Theory and Applications. Chapman & Hall/CRC, 2006.
Warning: These citations may not always be 100% accurate.