@article{RM_1988_43_5_a7,
     author = {S. Kh. Aranson and E. V. Zhuzhoma},
     title = {On~the $C^r$-closing lemma on~surfaces},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {209--210},
     publisher = {mathdoc},
     volume = {43},
     number = {5},
     year = {1988},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1988_43_5_a7/}
}