Paper: Prototyping a Geophysical Algorithm in Python  Spitz-Prony Noise Attenuation (Karl Schleicher)

"Spitz's", or rather "The paper of Spitz on..."
Fix references by adding underscore "[Atr01]_"
Code functions in style
Enthought's Canopy -> add footnote reference to link
"I  prototyped my code" spaces after I