Campbell, S. L. V. (1982). Singular systems of differential equations II. Pitman Advanced Publishing Program.
Citace podle Chicago (17th ed.)Campbell, Stephen La Vern. Singular Systems of Differential Equations II. Boston: Pitman Advanced Publishing Program, 1982.
Citace podle MLA (9th ed.)Campbell, Stephen La Vern. Singular Systems of Differential Equations II. Pitman Advanced Publishing Program, 1982.
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