There are 3 different platforms
GPL13112 Illumina HiSeq 2000 (Mus musculus)
GPL16417 Illumina MiSeq (Mus musculus)
GPL17021 Illumina HiSeq 2500 (Mus musculus)
and 1800+ samples
in the GEO accession you listed so it is reasonable for multiple publications to list the same accession.