B2B eContract handling : a survey of projects, papers and standards / S. Angelov, P. GrefenA framework for analysis of B2B electronic contracting support / S. Angelov, P. GrefenAn approach to the construction of flexible B2B E-contracting processes / S. Angelov, P. GrefenB2B eContract handling : a survey of projects, papers and standards / S. Angelov, P. GrefenA framework for analysis of B2B electronic contracting support / S. Angelov, P. GrefenAn approach to the construction of flexible B2B E-contracting processes / S. Angelov, P. GrefenAn analysis of the B2B e-contracting domain : paradigms and required technology / Samuil Angelov and Paul GrefenEvaluation of the E-contracting reference architecture / Samuil Angelov
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On deep e-contracting / P. Grefen, S. AngelovA framework for E-services : a three-level approach towards process and data management / P. Grefen, H. Ludwig, S. AngelovOn deep e-contracting / P. Grefen, S. AngelovA framework for E-services : a three-level approach towards process and data management / P. Grefen, H. Ludwig, S. Angelov