The others are:
Synthesis, debugging, and effects of synthetic chromosome consolidation: synVI and beyond: http://science.sciencemag.org/content/355/6329/eaaf4831
“Perfect” designer chromosome V and behavior of a ring derivative: http://science.sciencemag.org/content/355/6329/eaaf4704
Deep functional analysis of synII, a 770-kilobase synthetic yeast chromosome: http://science.sciencemag.org/content/355/6329/eaaf4791
Bug mapping and fitness testing of chemically synthesized chromosome X: http://science.sciencemag.org/content/355/6329/eaaf4706
Engineering the ribosomal DNA in a megabase synthetic chromosome: http://science.sciencemag.org/content/355/6329/eaaf3981
3D organization of synthetic and scrambled chromosomes: http://science.sciencemag.org/content/355/6329/eaaf4597
Along with an introduction: http://science.sciencemag.org/content/355/6329/1038
and perspective: http://science.sciencemag.org/content/355/6329/1024