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"Transformations of Structures: an Algebraic Approach."
Hartmut Ehrig et al. (1981)
- Hartmut Ehrig, Hans-Jörg Kreowski, Andrea Maggiolo-Schettini, Barry K. Rosen, Józef Winkowski:
Transformations of Structures: an Algebraic Approach. Math. Syst. Theory 14: 305-334 (1981)
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