0 Dhananjay Mishra Clifford A. Shaffer Ramakrishnan, Naren Layne T. Watson Kyung K. Bae Jian He Alex A. Verstak William H. Tranter 2007 S4W: a problem-solving environment for wireless system design Softw. Pract. Exper. New York, NY, USA John Wiley & Sons, Inc. 37 1539–1558