@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040092,
 author = {Fejzullahu and Bujar, Xh},
 issue = {2},
 journal = {Journal of mathematical sciences, the University of Tokyo},
 month = {Oct},
 pages = {243--255},
 title = {A Cohen type inequality  for   polynomial expansions associated with the  measure (1-χ)α(1+χ)βdχ+Mδ-1+Nδ1},
 volume = {15},
 year = {2008}
}