Error message

  • Notice: Undefined variable: _SESSION in dial_widget_pr_publication_action() (line 140 of /var/www/html/drupal-7.54/sites/all/modules/dial/dial_widget/dial_widget_pr/dial_widget_pr.module).
  • Warning: array_key_exists() expects parameter 2 to be array, null given in dial_widget_pr_publication_action() (line 140 of /var/www/html/drupal-7.54/sites/all/modules/dial/dial_widget/dial_widget_pr/dial_widget_pr.module).

Location Problems

Bibliographic reference Louveaux, François ; Labbé, M. ; Dell'Amico, M ; Maffioli, F ; Martello, S. Location Problems. In: Annoted Bibliography in Combinatorial Optimization : , Wiley  : Chichester, England 1998, p. 261-281
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