@article{700182,
     title = {On a certain boundary value problem of the third order},
     booktitle = {Equadiff 6},
     series = {GDML\_Books},
     publisher = {J. E. Purkyn\v e University, Department of Mathematics},
     address = {Brno},
     year = {1986},
     pages = {129-132},
     mrnumber = {MR0877114},
     zbl = {0604.34010},
     url = {http://dml.mathdoc.fr/item/700182}
}

Greguš, Michal. On a certain boundary value problem of the third order, dans Equadiff 6, GDML_Books,  (1986), pp. 129-132. http://gdmltest.u-ga.fr/item/700182/