Managing the Development of Large Software Systems A Research Paper by Winston W. Royce www-scf.usc.edu The ordering of steps
Anatomical Drawings of Staircase Spaces A Book by Tomoyuki Tanaka ShibuyaDetailPlatformsSpiralDescent+3 More Back to the Drawing BoardSection-perspective drawingKengo Kuma's sketches architecturedrawingtransportationart
Platforms Show image 0 Show image 1 Original by Tanaka, and my own digital tracing. Tablets have caught up