A cogent analysis of the underlying complexity of software engineering. Each problem is new; software is the most complex thing humans have ever built; it is impossible to measure complexity of something given that product. Software is fractal in complexity (really?)
N. Leveson, M. Heimdahl, H. Hildreth, J. Reese, and R. Ortega. IWSSD '91: Proceedings of the 6th international workshop on Software specification and design, page 31--41. Los Alamitos, CA, USA, IEEE Computer Society Press, (1991)