Dear colleagues, I have seen inconsistent treatment on the issue: When the 264 1 publication date is supplied uncertainly with square bracket but the same year with the real copyright date (probably based on the copyright date in most cases), what DtSt should we use? "t" or "s"? I have found some are using "t", some using "s".
I kind of remember that I once read a post about the issue. At the beginning, it encouraged to use "s", but later the post master said that getting some official response that since both copyright and publication date is supplied, "t" should be used even they are the same. However, since only publication date is required, it is fine by not supplying copyright date. If not supplying copyright date, it's fine by just using "s".
What should be the right practice? Thanks.