Brain Wave Research PTSD, Depression Let me preface this with I am a Software Engineer, NOT a neuro-scientist. Please forgive me if my terminology isn't spot on.

I am obsessed with using my skills as a computer scientist to help veterans with PTSD and Depression. 

Currently I am attempting to do research on the effects that depression takes on brainwaves. From my, all be it limited, understanding, depression causes a drop in Alpha brainwaves. I want to continue doing research on this topic and nail down as many brainwave signals as possible before I go into the development phase but for the life of me, I have no idea where to begin my research. 

What I am looking for is someone to provide me with a resource[s] that will teach me about the effects depression has on brainwaves.
Some research which may help is as follows:

Fingelkurts, A. A., Fingelkurts, A. A., Rytsälä, H., Suominen, K., Isometsä, E., &amp; Kähkönen, S. (2007). Impaired functional connectivity at EEG alpha and theta frequency bands in major depression. Human brain mapping, 28(3), 247-261. DOI:&nbsp;10.1002/hbm.20275

Peniston, E. G., &amp; Kulkosky, P. J. (1991). Alpha-theta brainwave neurofeedback for Vietnam veterans with combat-related post-traumatic stress disorder. Medical Psychotherapy, 4(1), 47-60.

Saxby, E., &amp; Peniston, E. G. (1995). Alpha‐theta brainwave neurofeedback training: An effective treatment for male and female alcoholics with depressive symptoms. Journal of clinical psychology, 51(5), 685-693.DOI:&nbsp;10.1002/1097-4679(199509)51:5%3C685::AID-JCLP2270510514%3E3.0.CO;2-K