Compared with the dermatoglyphic methods used up to now, the topological descriptive formulae of Penrose and Loesch result in loss of information. Some very different dermatoglyphic configurations are topologically equivalent and some very important features do not appear by the topological notations
"The Topological Dermatoglyphic Method of L. S. Penrose and D. Loesch: A Critical Consideration,"
3, Article 15.
Available at: https://digitalcommons.wayne.edu/humbiol/vol54/iss3/15