Zill, D. G. (2001). A first course in differential equations with modeling applications (7th edition.). Brooks/Cole Thomson Learning.
Citace podle Chicago (17th ed.)Zill, Dennis G. A First Course in Differential Equations with Modeling Applications. 7th edition. Pacific Grove, CA: Brooks/Cole Thomson Learning, 2001.
Citace podle MLA (8th ed.)Zill, Dennis G. A First Course in Differential Equations with Modeling Applications. 7th edition. Brooks/Cole Thomson Learning, 2001.
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