We explain how the current version of the DVIPDF program manages to integrate external multipage PDF files into its own PDF output.
@article{CG_1998___28-29_231_0, author = {Lesenko, Sergey}, title = {DVIPDF and {Embedded} {PDF}}, journal = {Cahiers GUTenberg}, pages = {231--241}, publisher = {Association GUTenberg}, number = {28-29}, year = {1998}, language = {en}, url = {http://www.numdam.org/item/CG_1998___28-29_231_0/} }
Lesenko, Sergey. DVIPDF and Embedded PDF. Cahiers GUTenberg, no. 28-29 (1998), pp. 231-241. http://www.numdam.org/item/CG_1998___28-29_231_0/