@article{aca9c2d4624a4bb9939da66c556c6db1,
title = "Discovery of multiple shells around the planetary nebula IC 418",
author = "G. Ramos-Larios and R. V{\'a}zquez and Guerrero, {M. A.} and L. Olgu{\'i}n and Marquez-Lugo, {R. A.} and H. Bravo-Alfaro",
year = "2012",
month = jul,
day = "1",
doi = "10.1111/j.1365-2966.2012.21165.x",
language = "American English",
pages = "3753--3760",
journal = "Monthly Notices of the Royal Astronomical Society",
issn = "0035-8711",
publisher = "Oxford University Press",
}