Resolution of racemic ephedrine(d,l-ephedrine) will be done by d-mandelic acid but what about pseudoephedrine? d-mandelic acid is usable for it?

Resolution of dl-Ephedrine.—A mixture of 13.8 g. of dl-ephedrine and 7.7 g. of d-mandelic
acid was dissolved in 30 cc. of hot 95% alcohol. On cooling the d-ephedrin-d-
mandelate crystallized out. After two recrystallizations from a small volume of alcohol
the product consisted of colorless, rhombic plates, melting at 170° with previous
sintering at 167°. The combined mother liquor yielded a further small amount of this
product. The salt as thus obtained was basified with potassium hydroxide and the base
was extracted with ether. The ethereal solution was evaporated to a small volume and
treated with alcoholic hydrogen chloride. The d-ephedrine hydrochloride as thus obtained
melted at 218 to 218.5°.
The mother liquor from the mandelate of the d-base was basified and the.extracted
base treated with 7.7 g. of l-mandelic acid. The crystalline mandelate was twice
recrystallized from a small volume of alcohol; m. p. 170° with previous sintering at
167°. The l-ephedrine hydrochloride obtained from the mandelate melted at 218 to
218.5°, alone or admixed with a purified specimen from Ma Huang.
It was now possible to obtain a further amount of d- and then l-base from the
mother liquor from the mandelate crystallizations by alternate treatment with d- and
l-mandelic acid, respectively.

I made Ephedrine isomers (+,- Ephedrine - +,- Pseudoephedrine)
(by below proccess:
http://www.erowid.org/archive/rhodium/chemistry/nor-pseudo-ephedrine.html
just i used tetrahedron letters for methylation step)
and successfully i separated Pseudoephedrine by oxalic acid.
Now i have +,- Pseudoephedrine and  want to separate dextro(+)(1S,2S) enantiomer from levo(-)(1R,2R)