@article{10_4064_ap_35_2_167_186,
     author = {Janusz Traple},
     title = {Boundary value problem for differential and difference second order systems},
     journal = {Annales Polonici Mathematici},
     pages = {167--186},
     publisher = {mathdoc},
     volume = {35},
     number = {2},
     year = {1977},
     doi = {10.4064/ap-35-2-167-186},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-35-2-167-186/}
}