N. I. Grinberg, A. Kirsch. The factorization method for obstacles with a-priori separated sound-soft and sound-hard parts. Mathematics and Computers in Simulation, 66(4-5):267-279, 2004. [doi]
@article{GrinbergK04,
title = {The factorization method for obstacles with a-priori separated sound-soft and sound-hard parts},
author = {N. I. Grinberg and A. Kirsch},
year = {2004},
doi = {10.1016/j.matcom.2004.02.011},
url = {http://dx.doi.org/10.1016/j.matcom.2004.02.011},
researchr = {https://researchr.org/publication/GrinbergK04},
cites = {0},
citedby = {0},
journal = {Mathematics and Computers in Simulation},
volume = {66},
number = {4-5},
pages = {267-279},
}