A study on degree of approximation by ( E , 1 ) summability means of the Fourier-Laguerre expansion. Nigam, H.K.; Sharma, Ajay — 2010 International Journal of Mathematics and Mathematical Sciences
On ( N , p , q ) ( E , 1 ) summability of Fourier series. Nigam, H.K.; Sharma, Ajay — 2009 International Journal of Mathematics and Mathematical Sciences