@article{700162,
     title = {Preface},
     booktitle = {Equadiff 6},
     series = {GDML\_Books},
     publisher = {J. E. Purkyn\v e University, Department of Mathematics},
     address = {Brno},
     year = {1986},
     pages = {III-IV},
     url = {http://dml.mathdoc.fr/item/700162}
}

 (éd.). Preface, dans Equadiff 6, GDML_Books,  (1986), pp. III-IV. http://gdmltest.u-ga.fr/item/700162/