@incollection{Das_j1995_b, author = {J{\"u}rgen~Dassow}, title = {{An example of an eco-grammar system: a can collecting robot}}, booktitle = {{Artificial Life: Grammatical Models}}, publisher = {Black Sea University Press}, year = 1995, editor = {Gheorghe~P\u{a}un}, pages = {240--244} }