Tuğ, O. 2021. Almost and Strongly Almost B(r ̃,s ̃,t ̃,u ̃)- Summable Double Sequences. EURASIAN JOURNAL OF SCIENCE AND ENGINEERING. 7, 2 (Dec. 2021), 71–89. DOI:https://doi.org/10.23918/eajse.v7i2p71.