https://mofem.eng.gla.ac.uk/structMixTransport_1_1MixTransportElement_1_1OpValuesGradientAtGaussPts.html
MoFEM: MixTransport::MixTransportElement::OpValuesGradientAtGaussPts Struct Reference
mofemstructreference
https://mofem.eng.gla.ac.uk/structMixTransport_1_1UnsaturatedFlowElement_1_1OpEvaluateInitiallHead.html
MoFEM: MixTransport::UnsaturatedFlowElement::OpEvaluateInitiallHead Struct Reference
mofemstructreference