“Dual task walking in healthy aging: Effects of narrow and wide walking paths,” Charlotte Hennah, Geraint Ellis, and Michail Doumas (PLoS ONE 16(12): e0261647. doi.org/10.1371/journal.pone.0261647, XML, HTML, and .pdf format, 14p.).
journals.plos.org/plosone/article?id=10.1371/journal.pone.0261647
