F. Gesmundo and F. Viani have modeled the growth rates of twooxide scales by the system: We provide a complete qualitative analysis of (1.1) by making use of known results about the general «-dimensional dynamical system: We show that for m > 1 , the Gesmundo-Viani system admits a unique parabolic solution qi(t) = c¡yft, c, > 0. This parabolic solution attracts all other solutions. Every solution extends uniquely to a solution on [0, +oo), such that the extended solution is eventually

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... lly increasing. Finally, the trajectory of any solution coincides with a trajectory of the following linear system: dqx m-\ K2 K2 dq2 K2 Kx -j7-=-í<¡i+m^-q2, -f± = -^qx+m-¿q2. dt m 2 2 dt 2 2