Nicholas Willems
- Analysis of Inelastic Suspension Structures. Dans: Journal of the Structural Division (ASCE), v. 97, n. 12 (décembre 1971). (1971):
- Optimum Plastic Design of Steel Frames. Dans: Journal of the Structural Division (ASCE), v. 98, n. 8 (août 1972). (1972):
- Approximate Design by Geometric Series. Dans: Journal of the Structural Division (ASCE), v. 107, n. 9 (septembre 1981). (1981):