Using Olex2 [1], the structure was solved with the ShelXS structure solution program using Direct Methods and refined with the ShelXL refinement package using Least Squares minimisation.
[1]是参考文献。
请问上面这句话是什么意思?OLEX2 和SHELXL是什么?这句话可以出现在要发表的文章里吗?这个参考文献要引用吗?