@Article{JPDE-3-17,
author = {Li Yishen, Cheng Yi},
title = {Symmetries in (1+1)-dimensional Integrable System with Their Algebraic Structures and Conserved Quantities},
journal = {Journal of Partial Differential Equations},
year = {1990},
volume = {3},
number = {4},
pages = {17--30},
abstract = { In this paper we offer a general method or constructing symmetries and conserved quantities in the (1 + 1)-dimensional integrable system, prove the algebraic relations between symmetries, and what is more, give applications of this method in many integrable systems with physical significance.},
issn = {2079-732X},
doi = {https://doi.org/},
url = {http://global-sci.org/intro/article_detail/jpde/5811.html}
}