@ARTICLE{haar2013,
     Title={Haar wavelet approximate solutions for the generalized Lane Emden equations arising in astrophysics},
     Author={Harpreet Kaur, R.C. Mittal and Vinod Mishra},
     Journal={Computer Physics Communications},
     Volume={184},
     Number={9},
     Pages={2169-2177},
     Publisher={Elsevier},
     Year={2013}
}