On the Hellmann-Feynman theorem and the variation of zeros of certain special functions

A Treatise on the Theory of Bessel Functions.

Matthew Porter, G. N. Watson · American Mathematical Monthly · 1923 · 9.6K citations

Natural Sciences, Mathematics, Physics +13

A Treatise on the Theory of Bessel Functions

H. T. Davis, G. N. Watson · National Mathematics Magazine · 1944 · 5.4K citations

Natural Sciences, Mathematics, Physics +10

Forces in Molecules

Richard P. Feynman · Physical Review · 1939 · 3.8K citations · Full text

Natural Sciences, Chemistry, Physics +15

On orthogonal polynomials

P. Túrán · Analysis Mathematica · 1975 · 1.6K citations

On the variation with respect to a parameter of zeros of Bessel and q-Bessel functions

Mourad E. H. Ismail, Martin E. Muldoon · Journal of Mathematical Analysis and Applications · 1988 · 66 citations

Natural Sciences, Physics, Differential Equations +3