梅加强, 徐. (1998). ON COMPLETE OPEN MANIFOLDS WITH NON-NEGATIVE CURVATURE ALONG RAY DIRECTIONS. Acta mathematica scientia, 18(2), 197-202. https://doi.org/10.1016/S0252-9602(17)30753-1
Chicago Style (17th ed.) Citation梅加强, 徐森林. "ON COMPLETE OPEN MANIFOLDS WITH NON-NEGATIVE CURVATURE ALONG RAY DIRECTIONS." Acta Mathematica Scientia 18, no. 2 (1998): 197-202. https://doi.org/10.1016/S0252-9602(17)30753-1.
MLA (9th ed.) Citation梅加强, 徐森林. "ON COMPLETE OPEN MANIFOLDS WITH NON-NEGATIVE CURVATURE ALONG RAY DIRECTIONS." Acta Mathematica Scientia, vol. 18, no. 2, 1998, pp. 197-202, https://doi.org/10.1016/S0252-9602(17)30753-1.
Warning: These citations may not always be 100% accurate.