of view. In the literature \[11-13\] based on the elastic theory for the vortex systems with pinning disorder, one first starts from low fields and low temperatures and hence, works in the London (phase-only) limit of the GL model. Consequently, a glassy solid phase, named Bragg-glass (BrG) phase, was proposed as the ground state in cleaner real systems. Then, a melting line of BrG phase is estimated in terms of some kind of Lindemann criterion and is usually identified with a simultaneous destruction of positional and glass (superconducting) orders. Since the positional ordering of field-induced vortices in clean bulk systems is believed to occur through a first order transition \[14\], however, this picture of glass ordering \[11-13\] does not permit a continuous disappearance of linear resistance and hence, is incompatible with transport phenomena in fields lower than a lower critical point of clean YBCO samples \[7-9\] and in systems with a continuous glass transition \[15\] due to strong correlated (line-like) disorder.

By contrast, the approach \[16-19\] from higher temperatures describes the vanishing of linear resistance according to a superconducting glass ordering proposed by Fisher et al. \[20\] for homogeneous (nongranular) type II superconductors in nonzero fields. In layered materials, this 