for a review on pickup and delivery

for a review on pickup and delivery problems. To keep the length of
this paper reasonable, the operational planning of multimodal terminals
is also out of scope. The review paper by Stahlbock and Voß
(2008) gives a nice overview in this field.
Over the years, different terminologies circulate in the literature
and in the industry: multimodal, intermodal, co-modal, and more recently,
synchromodal transportation. We give a definition for each
here.