1 http://hdl.handle.net/10338.dmlcz/143133 1 Seemingly unrelated regression models http://hdl.handle.net/10338.dmlcz/143137 Seemingly unrelated regression models Positive solutions and eigenvalue intervals of a nonlinear singular fourth-order boundary value problem http://hdl.handle.net/10338.dmlcz/143136 Positive solutions and eigenvalue intervals of a nonlinear singular fourth-order boundary value problem On the asymptotics of solutions to the second initial boundary value problem for Schrödinger systems in domains with conical points http://hdl.handle.net/10338.dmlcz/143135 On the asymptotics of solutions to the second initial boundary value problem for Schrödinger systems in domains with conical points Periodic solutions for some nonautonomous $p(t)$-Laplacian Hamiltonian systems http://hdl.handle.net/10338.dmlcz/143134 Periodic solutions for some nonautonomous $p(t)$-Laplacian Hamiltonian systems