Electron orbits, Sommerfeld model, Atomic Spectra of hydrogen atom

1.      Perspective of Modern Physics by Beiser, McGraw-Hill, (1988)

         Page no. 118-122, Page no. 124-136

2.      Atomic and Quantum Physics by H. Haken and H. C. Wolf, Springer, (1994)

       Page no.106

http://www.met.reading.ac.uk/pplato2/h-flap/phys8_2.html