THE PERIODIC SOLUTION PROBLEMS OF NONLINEAR EQUATIONS OF MOTION : Part 1 Review and Classification of Unkowns in Algebraic Equations
1979 ◽
Vol 276
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pp. 59-67
1979 ◽
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pp. 45-54
1979 ◽
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pp. 9-14
1979 ◽
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pp. 21-27
2013 ◽
Vol 139
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pp. 114-145
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1998 ◽
Vol 250
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pp. 394-402
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1993 ◽
Vol 335
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pp. 11-16
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