GITESHWARI PANDEY; A. K. MISHRA; S. K. PANDEY; R. N. SINGH. Gradient η-Ricci Solitons on ϕ-Projectively Flat Lorentzian Para-Kenmotsu Manifolds. IJRDO -JOURNAL OF MATHEMATICS, v. 12, n. 1, p. 60-75, 12 May 2026.