@article{10_4064_ap_28_1_67_87,
     author = {Vadim Komkov and Carter Waid},
     title = {Asymptotic behavior of non-linear inhomogeneous equations via non-standard analysis. {Part} {I.} {Second} order equations},
     journal = {Annales Polonici Mathematici},
     pages = {67--87},
     publisher = {mathdoc},
     volume = {28},
     number = {1},
     year = {1973},
     doi = {10.4064/ap-28-1-67-87},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-28-1-67-87/}
}