Why can't we implement this SDM? [systems development methodology]

T. Roberts
1999 IEEE Software  
I E E E S o f t w a r e N o v e m b e r / D e c e m b e r 1 9 9 9 0 7 4 0 -7 4
doi:10.1109/52.805477 fatcat:fw47tdj4fbaw5kbbutitutujm4