@article{VMap09TASE,
 author = {X. Li and X. Guo and H. Wang and Y. He and X. Gu and H. Qin},
 title  = {Meshless Harmonic Volumetric Mapping using Fundamental Solution Methods},
 journal = {IEEE Trans. on Automation Science and Engineering},
 volume = {6},
 number = {3}, 
 year = {2009},
 pages = {409-422},
}