Editing Tractive effort (section)

==References==
{{reflist
|refs=

<ref name="dynamics">{{cite book|title=Handbook of railway vehicle dynamics|editor=Simon Iwnicki|publisher=CRC Press: Taylor & Francis|location=Boca Raton|year=2006|page=256|url=https://books.google.com/books?id=Im0ZjhI3a-cC | isbn=978-0-8493-3321-7}}</ref>

<ref name=marks>{{cite book|title=Marks Standard Handbook for Mechanical Engineers|editor1=Eugene A. Avallone |editor2=Theodore Baumeister |editor3=Ali Sadegh |edition=11th|page=166|url=https://books.google.com/books?id=QrQQTTmr3sQC&q=continuous+tractive+effort&pg=RA4-PA166 | isbn=978-0-07-142867-5 | year=2006 | publisher=McGraw-Hill}}</ref>

<ref name=railpage>[http://www.railpage.org.au/xpt/delivery.html XPT: Delivery, test runs and demonstration runs railpage.au.org ''see graph'']</ref>

<ref name=siemens>[http://www.siemens.dk/ccmi/bu/ts/download/pdf/tog/lokomotiver1/EuroRunner_ER20_eng.pdf Eurorunner ER20 BF and ER20 BU, Diesel electric platform locomotives for Europe siemens.dk (page 3)]</ref>

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<ref name=voith>[http://www.voithturbo.de/applications/documents/document_files/1581_e_g_1974_gravita_e_2008-10_singlepage.pdf The Gravita Locomotive Family voithturbo.de (page 2)] {{Webarchive|url=https://web.archive.org/web/20090318070256/http://www.voithturbo.de/applications/documents/document_files/1581_e_g_1974_gravita_e_2008-10_singlepage.pdf |date=2009-03-18 }}</ref>

<ref name=vossloh>[http://www.vossloh-espana.com/cms/media/downloads/pdfs/flyer/Vossloh_Espana_EURO4000_freight_us.pdf EURO 4000 Freight Diesel-Electric Locomotives vossloh-espana.com (page 2)]</ref>

}}