Infinity norm bounds for the inverse of Nekrasov matrices
  From the application point of view, it is important to have a good upper bound for the maximum norm of the inverse of a given matrix A. In this paper we will give two simple and practical upper bounds for the maximum norm of the inverse of a Nekrasov matrix. 
Ljiljana Cvetkovic, Ping-Fan Dai, Ksenija Doroslovacki and Yao-Tang Li
math.NA