ON THE BLOW-UP PHENOMENA FOR A 1-DIMENSIONAL EQUATION OF ION SOUND WAVES IN A PLASMA: ANALYTICAL AND NUMERICAL INVESTIGATION СтатьяKorpusov M.O., Lukyanenko D.V., Panin A.A., Shlyapugin G.I.Mathematical Methods in the Applied Sciences. Том 41. 2018. С. 2906-2929