x1 = sitna1 = utka1 cites/quotes/refers to/makes reference to a source, which itself/who themself cites/quotes/refers to/makes reference to a source, which itself/who themself in turn cites/quotes/refers to/makes reference to source, ..., which itself/who themself cites/quotes/refers to/makes reference to source x2 = sitna2 = utka2, via intermediate path-connecting steps x3 = utka3 (ordered list; ce'o), all for the same information/statement x4 = sitna3 (du'u).
The list formed by appending x1 and x2 to the respective ends of x3 is a chain of citations, all for the same piece of information or statement, such that each entry in the list in a direct source for the entry immediately prior to it and an indirect source for all entries prior to that one; x2 may not be the ultimate source for the information, but the information can be tracked back to at least x2 along the path formed. This word is a brapagjvo with zevla ".utka"; it is slightly malformed in that "sitna" does not constitute a binary relationship, which is required by ".utka".