2004, Alan A Lew, Carolyn Cartier,Seductions of Place:
Vistas in San Francisco—a city whose real estate development platted out landgeometrically and gridded over a series of hills—offer vertical, stunning viewscapes of architecture and the Bay, natural and built environments.
2015, Miguel Abreu, Leonardo Macarini, “Multiplicity of periodic orbits for dynamically convex contact forms”, inarXiv[1]:
We give a sharp lower bound for the number ofgeometrically distinct contractible periodic orbits of dynamically convex Reeb flows on prequantizations of symplectic manifolds that are not aspherical.