@article{articled140b3b0,
title   = {Silicon microtubes made by immersing macroporous silicon into ammonium fluoride solution},
author = {Huanca, Danilo Roque and Hae, Yong Kim and Salcedo, Walter Jaimes},
year = {2015},
doi = {10.1016/j.matchemphys.2015.03.032},
journal   = {Materials chemistry and Physics}
}