temperatures above $2.5$ to $3$ MeV whereas pairing correlations have already vanished at $T \!\approx\! 1.5$ MeV or even before. In order to take care of the $T$-dependence of quantal corrections we multiply their values obtained at $T \!=\! 0$ MeV with a temperature smoothing function which goes to zero at $T \!\!=\! 3$ MeV for shell corrections and at $T \!=\! 1.5$ MeV in the case of pairing [@I78] - [@EgRo00]. The energy landscape then obtained for $E^*_{tot} \!=\! 26\,$MeV and $L \!=\! 60\,\hbar$ is drawn on Fig. 6. Comparing the landscapes in Figs. 5 and 6, one notices the appearance, due to the presence of microscopic corrections, of asymmetric fission channels beyond $c \approx 1.7$ ending up in well pronounced valleys around $\alpha \approx \pm 0.035$.

The resolution of the Langevin equation in the landscapes of Figs. 5 and 6 gives rise to the distributions for the asymmetry parameter and fission-fragment masses presented in Figs. 7 and 8 respectively. Whereas symmetric distributions were obviously expected for the pure LDM landscape, the distributions obtained in the case where quantal effects are present are a little surprising, because of their very strong asymmetry in spite of the rather flat energy 