Easy read:
http://phenomena.nationalgeographic.com/2013/11/15/mice-inherit-the-fears-of-their-fathers/
http://discovermagazine.com/2013/may/13-grandmas-experiences-leave-epigenetic-mark-on-your-genes
http://www.bbc.com/news/health-25156510 http://www.nature.com/news/sperm-rna-carries-marks-of-trauma-1.15049
http://www.nature.com/news/searching-chromosomes-for-the-legacy-of-trauma-1.15369
The healing process:
http://www.nature.com/neuro/journal/v7/n8/abs/nn1276.html
Journals accessible without subscription:
http://www.nature.com/ng/journal/v23/n3/full/ng1199_314.html