@inproceedings{b.1987poles, title={Poles of |$f$($z,w$)|^{2$s$}and roots of the$B$-function}, author={B. Lichtin}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203530616291519}, booktitle={Arkiv for Matematik}, volume={27}, number={1}, pages={283-304}, year={1987}, }