%0 Journal Article %A Attila Pethö %A László Szalay %T Upper bound on the solution to F(2k)n = ±F(2k)m with negative subscripts %J Revista colombiana de matematicas %D 2022 %P 179-187 %V 56 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/RCM_2022_56_2_a4/ %F RCM_2022_56_2_a4