This is a retouched picture, which means that it has been digitally altered from its original version. The original can be viewed here: Spiral model (Boehm, 1988).png: .

我，呢份作品嘅作者，決定用以下許可發佈呢件作品：

Public domainPublic domainfalsefalse

This work has been released into the public domain by its author, Example, at the [[::|英文 維基百科]] project. This applies worldwide. In case this is not legally possible: Example grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

Original upload log

This image is a derivative work of the following images:

• File:Spiral_model_(Boehm,_1988).png licensed with PD-user-w
  • 2010-01-16T18:33:08Z Conan 600x500 (19627 Bytes) small fixes
  • 2010-01-16T18:17:52Z Conan 600x500 (27978 Bytes) png->svg
  • 2008-08-27T23:57:07Z Mdd 730x600 (26180 Bytes) {{Information |Description=Spiral model (Boehm, 1988) |Source=Own work |Date=8 April 2008 (date original upload) |Author=Marctroy |Permission= |other_versions= }} {{PD-user-w|en|Wikipedia|Marctroy}} [[Category:Spiral diagr

Uploaded with derivativeFX