“…Actually, the bosonic limit of the two first N = 2 n-KdV hierarchies is composed of two decoupled KdV and non-standard KdV hierarchies [4,7] whereas the bosonic limit of the third one is the (1, n) KdV hierarchy [7] which is irreducible [8,9,10]. Recently, Krivonos and Sorin [11] gave a Lax representation for the third family of N = 2 KdV hierarchies.…”