Pollul, W.; Schütt, D. Characterization of growth in deterministic Lindenmayer systems. (English) Zbl 0303.68049 Nederl. Akad. Wet., Proc., Ser. A 78, 183-188 (1975). MSC: 68Q45 92D25 PDFBibTeX XMLCite \textit{W. Pollul} and \textit{D. Schütt}, Nederl. Akad. Wet., Proc., Ser. A 78, 183--188 (1975; Zbl 0303.68049)
Salomaa, Arto On exponential growth in Lindenmayer systems. (English) Zbl 0267.68032 Nederl. Akad. Wet., Proc., Ser. A 76, 23-30 (1973). MSC: 68Q45 92B05 PDFBibTeX XMLCite \textit{A. Salomaa}, Nederl. Akad. Wet., Proc., Ser. A 76, 23--30 (1973; Zbl 0267.68032)