A network needs to be constructed by a server (construction crew) that has a constant construction speed which is incomparably slower than the server’s travel speed within the already constructed part of the network. A vertex is recovered when it becomes connected to the depot by an already...

Reverse logistics problems arising in municipal waste management are both wide-ranging and varied. The usual collection system in UE countries is composed of two phases. First, citizens leave their refuse at special collection areas where different types of waste (glass, paper, plastic, organic...