1. Realtime and Embedded System lecture notes
http://csperkins.org/teaching/2009-2010/rtes/
2. Distributed Systems
http://www.isical.ac.in/~ansuman/reading.html
3. DISTRIBUTED SYSTEMS , IIT Kharagpur
http://cse.iitkgp.ac.in/~pallab/Distributed_Systems_2016_17/ds_spr16.html