@article{700206,
     title = {Preface},
     booktitle = {Differential Equations and Their Applications},
     series = {GDML\_Books},
     publisher = {Slovensk\'e pedagogick\'e nakladate\v lstvo},
     address = {Bratislava},
     year = {1967},
     pages = {5-6},
     url = {http://dml.mathdoc.fr/item/700206}
}

 (éd.). Preface, dans Differential Equations and Their Applications, GDML_Books,  (1967), pp. 5-6. http://gdmltest.u-ga.fr/item/700206/