Robert Hakl

International Conference on Differential Equations and Their Applications (Equadiff 12)

Josef Diblík, Zdeněk Šmarda, Zdeněk Svoboda, 2009 .

Maximum and antimaximum principles for a second order differential operator with variable coefficients of indefinite sign

Pedro J. Torres, Robert Hakl, R. Hakl, 2011, Appl. Math. Comput..

On a boundary value problem for first-order scalar functional differential equations

Robert Hakl, Alexander Lomtatidze, Bedřich Půža, 2003 .