Charles C. Zollman
- A 40-Year Saga Building and Rebuilding of Philadelphia's Walnut Lane Memorial Bridge. In: PCI Journal, v. 37, n. 4 (Juli 1992). (1992):
- A 40-Year Saga Building and Rebuilding of Philadelphia's Walnut Lane Memorial Bridge. In: PCI Journal, v. 37, n. 3 (Mai 1992). (1992):
- Rehabilitation of the Boivre Viaduct - A Multispan Prestressed Box Girder Bridge. In: PCI Journal, v. 31, n. 3 (Mai 1986). (1986):
- Magnel's impact on the advent of prestressed concrete. In: PCI Journal, v. 23, n. 3 (Mai 1978). (1978):