| 1988 |
| Spiros Cotsakis, J. Barrow, Inflation and the Conformal Structure of Higher-Order Gravity Theories, Phys. Lett., Vol = B214, pp. = 0, , 515-518, 1988, |
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| 1989 |
| Spiros Cotsakis, J. Barrow, Chaotic Behaviour in Higher-Order Gravity Theories, Phys. Lett., Vol = B232, pp. = 0, , 172-176, 1989, |
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| 1991 |
| Spiros Cotsakis, J. Barrow, Self-Regenerating Inflationary universe in higher-order gravity in arbitrary dimension, Phys. Lett., Vol = B258, pp. = 0, , 299-304, 1991, |
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| 1993 |
| Spiros Cotsakis, Conformal Transformations Single Out a Unique Measure of Distance, Phys. Rev., Vol = D47, pp. = 0, , 1437-1439, 1993, |
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| Spiros Cotsakis, J. Demaret, Y. de Rop, L. Querella, Mixmaster Universe in Fourth-Order Gravity Theories, Phys. Rev., Vol = D48, pp. = 0, , 4595-4603, 1993, |
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| Spiros Cotsakis, Georgios Flessas, Stability of FRW Cosmology in Higher Order Gravity, Phys. Rev., Vol = D48, pp. = 0, , 3577-3584, 1993, |
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| Spiros Cotsakis, Georgios Flessas, Generalized No-Hair Theorems, Phys. Lett., Vol = B319, pp. = 0, , 69-73, 1993, |
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| Spiros Cotsakis, P. Leach, Painleve Analysis of the Mixmaster Universe, J. Phys., Vol = A27, pp. = 0, , 1625-1631, 1993, |
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| 1994 |
| Spiros Cotsakis, P. Saich, Power-Law Inflation and Conformal Transformations, Class. Quant. Grav., Vol = 11, pp. = 0, , 383-387, 1994, |
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| Spiros Cotsakis, Georgios Flessas, P. Leach, Comment on a Paper Concerning Symmetries of Equations of Motion and Equivalent Lagrangians, Can. J. Phys., Vol = 72, 86-88, 1994 |
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Greek