电子表格想法的完成：Petri网×Ted Nelson的Zz结构。Completion of the spreadsheet idea: Petri nets × Ted Nelson s Zz-structures. (2016-07-13, Ruby, 798KB, 下载0次)
Ruby的Petri网工作流引擎。Petri Net Workflow Engine for Ruby. (2023-03-09, Ruby, 515KB, 下载2次)