@book{8493, author = {Hsu, Hwei.}, title = {Schaum's outline of signals and systems /}, publisher = {McGraw-Hill Education,}, year = {2013.}, series = {Schaum's outlines}, address = {New York, NY :}, edition = {3rd edition.}, url = {http://www.loc.gov/catdir/enhancements/fy1318/2013946503-b.html} }