+Source2: http://www.caam.rice.edu/software/ARPACK/SRC/ug.ps.gz
+# Source2-md5: 79cc51e4812c75873adafcad2185842e
+Source3: http://www.caam.rice.edu/software/ARPACK/SRC/P57_58.ps.gz
+# Source3-md5: b86d77199f989fc438acaf7ac0433e76
+Source4: http://www.caam.rice.edu/software/ARPACK/SRC/P61_62.ps.gz
+# Source4-md5: d116887acb3d61fecf645c2d37d4d517