[?] Get the Oblate Spheroidal Coordinates from MathWorld?

Questions
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1

I am looking for the compelte notebook of the Oblate Spheroidal Coordinates published in MAthworld

But for some reason the initialization to the VectorAnalysis Calculus is dead . Therefore , none of the function are working. Please, advise. I will like to get the transformation matrix from and to Cartesian coordinates and the DEL and Curl operators.

2

Use the functions CoordinateChartData, Laplacian, Curl et cetera:

CoordinateChartData[{{"OblateSpheroidal", {\[FormalA]}}, "Euclidean", 3}, "Properties"]