The two first skirmished in September 2001 in two articles in Scientific American.
(The error also appeared in two articles on Sept. 29 analyzing specific ads).
The scientists presented their findings in two articles in the Journal of Experimental Biology.
The error was repeated on Wednesday in two articles about the shipwreck and in articles on Thursday and Friday.
The error also appeared in two articles and a picture caption on Saturday, and in an article on Monday.
Nicholas's encounter with Hatto resulted in two articles — one in International Piano, in January, 2006, and one in Gramophone, two months later.
Mr. Crystal has addressed that issue in previous books, and now in two articles for the Globe magazine and a short book about the "Romeo" experiment.
The discovery, published in two articles in the prestigious scientific journal Nature, held out the promise that scientists could develop simple procedures to create patient-matched stem cells.
Researchers in Thailand and Indonesia wrote in two articles in the journal Nature that the tsunami hit around 1300 or 1400, long before records of earthquakes in the region began to be kept.
On April 7, the day after The Sunday Times reported the dispute in two articles (written in part by Christopher Owen, one of the reporters for this article), the British Antique Dealers Associationn suspended Mr. Hobbs's membership.
Haruko Obokata, at the Riken Centre for Developmental Biology in Kobe, announced the breakthrough in January in two articles published in the scientific journal Nature, but the discovery was thrown into doubt after researchers elsewhere failed to replicate her work.
