Hellwig, G. (1964). Differential operators of mathematical physics. Addison – Wesley.
シカゴスタイル引用形Hellwig, Gunter. Differential Operators of Mathematical Physics. Addison – Wesley, 1964.
MLA引用形式Hellwig, Gunter. Differential Operators of Mathematical Physics. Addison – Wesley, 1964.
警告: この引用は必ずしも正確ではありません.