@article {Mathur:1970:1610-1928:160,
title = "Higher Order Elastic Constants in Piezoelectric Crystals in the Presence of Ultrasonic Waves",
journal = "Acta Acustica united with Acustica",
parent_itemid = "infobike://dav/aaua",
publishercode ="dav",
year = "1970",
volume = "23",
number = "3",
publication date ="1970-01-01T00:00:00",
pages = "160-164",
itemtype = "ARTICLE",
issn = "1610-1928",
url = "https://www.ingentaconnect.com/content/dav/aaua/1970/00000023/00000003/art00008",
author = "Mathur, S. S. and Gupta, P. N.",
abstract = "Expressions for second, third and fourth order elastic constants have been obtained for the piezoelectric crystal. The method used is an extension of the treatment given by McMahon [1] for the evaluation of second and third order elastic constants.",
}