Good places to find information about Maglev train:
1)
https://www.technologyreview.com/s/601417/the-unbelievable-reality-of-the-impossible-hyperloop/
2) Physics for Scientists and Engineers: a strategic
approach 3rd edition by Randall d. Knight
3) http://www.usjmaglev.com/usjmaglev/Timeline.html
4)
http://lrrpublic.cli.det.nsw.edu.au/lrrSecure/Sites/Web/physics_explorer/physics/lo/superc_08/superc_08_01.htm
5)
http://emt18.blogspot.com/2008/10/introduction.html
6) https://www.energy.gov/articles/how-maglev-works
7)
http://science.howstuffworks.com/transport/engines-equipment/maglev-train.htm