The Subspace Particle Journal was a periodical published in the 24th century.
Lieutenant Commander Data, while in command of the USS Sutherland, read the article "Topologies on Graf Tachyon Fields" from Vol. 182, No. 12 of the journal on a viewscreen while searching for clues on how to detect cloaked Romulan warbirds during the Klingon Civil War in 2368. (TNG: "Redemption II")