Camarero, J. J., Sisó, S. and Gil-Pelegrín, E. (2002) “Fractal dimension does not adequately describe the complexity of leaf margin in seedlings of Quercus species”, Anales del Jardín Botánico de Madrid, 60(1), pp. 63–71. doi: 10.3989/ajbm.2002.v60.i1.82.