The magnitude of the Norte Chico discovery has generated academic controversy among researchers. The "monumental feud", as described by "Archaeology", has included "public insults, a charge of plagiarism, ethics inquiries in both Peru and the United States, and complaints by Peruvian officials to the U.S. government". The lead author of the seminal paper of April 2001 was Peruvian Ruth Shady, with co-authors Jonathan Haas and Winifred Creamer, a married United States team; the coauthoring was reportedly suggested by Haas, in the hopes that the involvement of United States researchers would help secure funds for carbon dating as well as future research funding. Later, Shady charged the couple with plagiarism and insufficient attribution, suggesting the pair had received credit for her research, which had been going on since 1994.