download the free springer books listed here https://gist.github.com/bishboria/8326b17bbd652f34566a#file-springer-free-maths-books-md

download-free-springer-books.py

import urllib
import re
from subprocess import call
fp=urllib.urlopen("https://gist.githubusercontent.com/bishboria/8326b17bbd652f34566a/raw/c20ec05dc4669b93f16d0b5c5824615dea42a956/springer-free-maths-books.md")
for line in fp:
    matchObj = re.match( r'.*\((.*.pdf)\)', line)
    if matchObj:
        f=matchObj.group(1)
        print f
        call(["wget", f])