N. Kiran Kumar, G. Upender Reddy. “Operators Preserving K-G- Frames”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 11, no. 3 (December 15, 2020): 1462–1468. Accessed November 27, 2025. https://www.turcomat.org/index.php/turkbilmat/article/view/12958.