Jensen, Erick Frederick. “Schumann at Endenich.” The Musical Times CXXXIX (March-April, 1998): 14-24.
Sheds light on Schumann's time as an inmate at Endenich, suggesting that his condition was aggravated by unenlightened medical practices.
Ostwald, Peter F. Schumann: The Inner Voices of a Musical Genius. Boston: Northeastern University Press, 1985, 373 p.
Discusses Schumann's mental ailments, with an emphasis on manic depression as a possible diagnosis.
Dahlhaus, Carl. The Idea of Absolute Music. Chicago and London: University of Chicago Press, 1989, 176 p.
Discusses the philosophical and cultural foundations of thinking about music in nineteenth-century Germany, with particular reference to Schumann's originality as a writer and thinker.
Lippman, Edward A. “Theory and Practice in Schumann's Aesthetics.” Journal of the American Musicological Society XVII (1964): 310-45.
Discerns original aesthetical ideas in Schumann's criticism.
Plantinga, Leon. Romantic Music: A History of Musical Style in Nineteenth-Century Europe. New York and London: Norton, 1984, 523 p.
Discusses Schumann's music and writings in the context of nineteenth-century European music.
———. “Schumann's Critical Reaction to Mendelssohn.” In Mendelssohn and Schumann: Essays on Their Music and Its Context, edited by Jon W. Finson and R. Larry Todd, pp. 11-19. Durham: Duke University Press, 1984.
Analyzes Schumann's critical assessment of Mendelssohn, arguing that Schumann was the only contemporary critic to form an objective view of Mendelssohn's music.
Pleasants, Henry. “Schumann the Critic.” In Robert Schumann: The Man and His Music, edited by Alan Walker, pp. 179-187. New York: Harper & Row, 1974.
Praises Schumann's criticism as an extraordinary blend of intuitive writing and meticulous analysis.
Additional coverage of Schumann's life and career is contained in the following source published by Thomson Gale: Literature Resource Center.