Dlotko, P., Brendel, P., Dłotko, P., Ellis, G., Juda, M., & Mrozek, M. (2015). Computing fundamental groups from point clouds. Applicable Algebra in Engineering, Communication and Computing, 26(1-2), pp. 27-48. doi:10.1007/s00200-014-0244-1

Dlotko, Pawel, P. Brendel, P. Dłotko, G. Ellis, M. Juda, and M. Mrozek. "Computing Fundamental Groups From Point Clouds." Applicable Algebra in Engineering, Communication and Computing 26, no. 1-2 (2015): 27-48.

Dlotko, Pawel, et al. "Computing Fundamental Groups From Point Clouds." Applicable Algebra in Engineering, Communication and Computing 26.1-2 (2015): 27-48.