Rothe, E. H. (1986). Introduction to various aspects of degree theory in banach spaces. American Mathematical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRothe, Erich H. Introduction to Various Aspects of Degree Theory in Banach Spaces. Providence: American Mathematical Society, 1986.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRothe, Erich H. Introduction to Various Aspects of Degree Theory in Banach Spaces. American Mathematical Society, 1986.
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