@Article{NM-14-235,
author = {G. Feng and B. Han},
title = {An adaptive multi-scale conjugate gradient method for distributed parameter estimation of 2-d wave equation},
journal = {Numerical Mathematics, a Journal of Chinese Universities},
year = {2005},
volume = {14},
number = {3},
pages = {235--243},
abstract = {},
issn = {},
doi = {https://doi.org/},
url = {http://global-sci.org/intro/article_detail/nm/10097.html}
}