[July 26, 2008]. (原始内容存档于2008-12-29). Neuman, William. Subway Service Increase to Be Less Than Hoped. The New York Times. 2008-06-10 [2019-02-21]. (原始内容存档于2019-07-15)
These results indicate that the addition of Wortmannin can significantly increase the response of cells into an osteogenic lineage in the presence of PDGF
History. www.erictb.info. [2016-02-23]. (原始内容存档于2016-03-04). City to Increase Subway Service On the IRT and BMT Lines Today (PDF). New York Times. 1946-12-12